2045157868 has 48 divisors (see below), whose sum is σ = 4096600704. Its totient is φ = 885012480.

The previous prime is 2045157857. The next prime is 2045157871. The reversal of 2045157868 is 8687515402.

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, 235296 + ... + 243832.

It is an arithmetic number, because the mean of its divisors is an integer number (85345848).

Almost surely, 2^2045157868 is an apocalyptic number.

It is an amenable number.

2045157868 is an abundant number, since it is smaller than the sum of its proper divisors (2051442836).

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

2045157868 is a wasteful number, since it uses less digits than its factorization.

2045157868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8842 (or 8840 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 2045157868 is about 45223.4216750568. The cubic root of 2045157868 is about 1269.3331212693. Note that the first 3 decimals are identical.

The spelling of 2045157868 in words is "two billion, forty-five million, one hundred fifty-seven thousand, eight hundred sixty-eight".