1301995628 has 12 divisors (see below), whose sum is σ = 2278796352. Its totient is φ = 650910960.

The previous prime is 1301995613. The next prime is 1301995633. The reversal of 1301995628 is 8265991031.

It is a happy number.

It is a super-2 number, since 2×1301995628² = 3390385230662228768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21626 + ... + 55422.

It is an arithmetic number, because the mean of its divisors is an integer number (189899696).

Almost surely, 2^1301995628 is an apocalyptic number.

It is an amenable number.

1301995628 is a deficient number, since it is larger than the sum of its proper divisors (976800724).

1301995628 is a wasteful number, since it uses less digits than its factorization.

1301995628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43432 (or 43430 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1301995628 is about 36083.1765231389. The cubic root of 1301995628 is about 1091.9510627168.

The spelling of 1301995628 in words is "one billion, three hundred one million, nine hundred ninety-five thousand, six hundred twenty-eight".