2045157540 has 48 divisors (see below), whose sum is σ = 5729575488. Its totient is φ = 545076864.

The previous prime is 2045157523. The next prime is 2045157593. The reversal of 2045157540 is 457515402.

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, 114879 + ... + 131481.

It is an arithmetic number, because the mean of its divisors is an integer number (119366156).

Almost surely, 2^2045157540 is an apocalyptic number.

2045157540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045157540 is an abundant number, since it is smaller than the sum of its proper divisors (3684417948).

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

2045157540 is a wasteful number, since it uses less digits than its factorization.

2045157540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18668 (or 18666 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 2045157540 is about 45223.4180486172. The cubic root of 2045157540 is about 1269.3330534113. Note that the first 3 decimals are identical.

The spelling of 2045157540 in words is "two billion, forty-five million, one hundred fifty-seven thousand, five hundred forty".