1270147649 has 2 divisors, whose sum is σ = 1270147650. Its totient is φ = 1270147648.

The previous prime is 1270147643. The next prime is 1270147657. The reversal of 1270147649 is 9467410721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 747202225 + 522945424 = 27335^2 + 22868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1270147649 - 2⁸ = 1270147393 is a prime.

It is a super-2 number, since 2×1270147649² = 3226550100520454402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1270147643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635073824 + 635073825.

It is an arithmetic number, because the mean of its divisors is an integer number (635073825).

Almost surely, 2^1270147649 is an apocalyptic number.

It is an amenable number.

1270147649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270147649 is an equidigital number, since it uses as much as digits as its factorization.

1270147649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1270147649 is about 35639.1308676292. The cubic root of 1270147649 is about 1082.9740980946.

The spelling of 1270147649 in words is "one billion, two hundred seventy million, one hundred forty-seven thousand, six hundred forty-nine".