1926404945 has 16 divisors (see below), whose sum is σ = 2441759232. Its totient is φ = 1456721280.

The previous prime is 1926404941. The next prime is 1926405001. The reversal of 1926404945 is 5494046291.

It is not a de Polignac number, because 1926404945 - 2² = 1926404941 is a prime.

It is a super-2 number, since 2×1926404945² = 7422072024240906050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1926404896 and 1926404905.

It is not an unprimeable number, because it can be changed into a prime (1926404941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137852 + ... + 151181.

It is an arithmetic number, because the mean of its divisors is an integer number (152609952).

Almost surely, 2^1926404945 is an apocalyptic number.

It is an amenable number.

1926404945 is a deficient number, since it is larger than the sum of its proper divisors (515354287).

1926404945 is a wasteful number, since it uses less digits than its factorization.

1926404945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289112.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 1926404945 is about 43890.8298508925. The cubic root of 1926404945 is about 1244.2735276726.

The spelling of 1926404945 in words is "one billion, nine hundred twenty-six million, four hundred four thousand, nine hundred forty-five".