1626998945 has 32 divisors (see below), whose sum is σ = 2317472640. Its totient is φ = 1080944640.

The previous prime is 1626998939. The next prime is 1626998963. The reversal of 1626998945 is 5498996261.

It is not a de Polignac number, because 1626998945 - 2⁶ = 1626998881 is a prime.

It is a super-2 number, since 2×1626998945² = 5294251134062226050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57626 + ... + 81084.

It is an arithmetic number, because the mean of its divisors is an integer number (72421020).

Almost surely, 2^1626998945 is an apocalyptic number.

It is an amenable number.

1626998945 is a deficient number, since it is larger than the sum of its proper divisors (690473695).

1626998945 is a wasteful number, since it uses less digits than its factorization.

1626998945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23585.

The product of its digits is 8398080, while the sum is 59.

The square root of 1626998945 is about 40336.0749825761. The cubic root of 1626998945 is about 1176.1492169648.

The spelling of 1626998945 in words is "one billion, six hundred twenty-six million, nine hundred ninety-eight thousand, nine hundred forty-five".