1229612945 has 16 divisors (see below), whose sum is σ = 1612396800. Its totient is φ = 892752000.

The previous prime is 1229612893. The next prime is 1229612957. The reversal of 1229612945 is 5492169221.

It is not a de Polignac number, because 1229612945 - 2¹⁴ = 1229596561 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14456 + ... + 51654.

It is an arithmetic number, because the mean of its divisors is an integer number (100774800).

Almost surely, 2^1229612945 is an apocalyptic number.

It is an amenable number.

1229612945 is a deficient number, since it is larger than the sum of its proper divisors (382783855).

1229612945 is a wasteful number, since it uses less digits than its factorization.

1229612945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37816.

The product of its digits is 77760, while the sum is 41.

The square root of 1229612945 is about 35065.8372921566. The cubic root of 1229612945 is about 1071.3288712604.

The spelling of 1229612945 in words is "one billion, two hundred twenty-nine million, six hundred twelve thousand, nine hundred forty-five".