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1401543389 is a prime number
BaseRepresentation
bin101001110001001…
…1101101011011101
310121200020210002102
41103202131223131
510332243342024
6351023534445
746505631221
oct12342355335
93550223072
101401543389
1165a153324
1233145a425
1319449c11c
14d41d4781
158309c1ae
hex5389dadd

1401543389 has 2 divisors, whose sum is σ = 1401543390. Its totient is φ = 1401543388.

The previous prime is 1401543371. The next prime is 1401543413. The reversal of 1401543389 is 9833451041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1178548900 + 222994489 = 34330^2 + 14933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1401543389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401540389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700771694 + 700771695.

It is an arithmetic number, because the mean of its divisors is an integer number (700771695).

Almost surely, 21401543389 is an apocalyptic number.

It is an amenable number.

1401543389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401543389 is an equidigital number, since it uses as much as digits as its factorization.

1401543389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1401543389 is about 37437.1925897229. The cubic root of 1401543389 is about 1119.0998797305.

The spelling of 1401543389 in words is "one billion, four hundred one million, five hundred forty-three thousand, three hundred eighty-nine".