1260156944 has 40 divisors (see below), whose sum is σ = 2531837952. Its totient is φ = 606965760.

The previous prime is 1260156929. The next prime is 1260156979. The reversal of 1260156944 is 4496510621.

It is a super-2 number, since 2×1260156944² = 3175991047022838272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1260156898 and 1260156907.

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, 104912 + ... + 116304.

Almost surely, 2^1260156944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260156944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265918976).

1260156944 is an abundant number, since it is smaller than the sum of its proper divisors (1271681008).

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

1260156944 is a wasteful number, since it uses less digits than its factorization.

1260156944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655 (or 11649 counting only the distinct ones).

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

The square root of 1260156944 is about 35498.6893279174. The cubic root of 1260156944 is about 1080.1271409533.

The spelling of 1260156944 in words is "one billion, two hundred sixty million, one hundred fifty-six thousand, nine hundred forty-four".