1298957156 has 24 divisors (see below), whose sum is σ = 2608037376. Its totient is φ = 554526720.

The previous prime is 1298957147. The next prime is 1298957161. The reversal of 1298957156 is 6517598921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1298957098 and 1298957107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83060 + ... + 97451.

It is an arithmetic number, because the mean of its divisors is an integer number (108668224).

Almost surely, 2^1298957156 is an apocalyptic number.

It is an amenable number.

1298957156 is an abundant number, since it is smaller than the sum of its proper divisors (1309080220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1298957156 is a wasteful number, since it uses less digits than its factorization.

1298957156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180779 (or 180777 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 53.

The square root of 1298957156 is about 36041.0482089520. The cubic root of 1298957156 is about 1091.1009710117.

The spelling of 1298957156 in words is "one billion, two hundred ninety-eight million, nine hundred fifty-seven thousand, one hundred fifty-six".