1420351957 has 2 divisors, whose sum is σ = 1420351958. Its totient is φ = 1420351956.

The previous prime is 1420351951. The next prime is 1420351969. The reversal of 1420351957 is 7591530241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758782116 + 661569841 = 27546^2 + 25721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420351957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420351951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710175978 + 710175979.

It is an arithmetic number, because the mean of its divisors is an integer number (710175979).

Almost surely, 2^1420351957 is an apocalyptic number.

It is an amenable number.

1420351957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420351957 is an equidigital number, since it uses as much as digits as its factorization.

1420351957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1420351957 is about 37687.5570579999. The cubic root of 1420351957 is about 1124.0837199601.

The spelling of 1420351957 in words is "one billion, four hundred twenty million, three hundred fifty-one thousand, nine hundred fifty-seven".