1545640002 has 32 divisors (see below), whose sum is σ = 3455847360. Its totient is φ = 512049600.

The previous prime is 1545639989. The next prime is 1545640003. The reversal of 1545640002 is 2000465451.

1545640002 is a `hidden beast` number, since 15 + 4 + 5 + 640 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1545640003) 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, 78999 + ... + 96602.

It is an arithmetic number, because the mean of its divisors is an integer number (107995230).

Almost surely, 2^1545640002 is an apocalyptic number.

1545640002 is an abundant number, since it is smaller than the sum of its proper divisors (1910207358).

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

1545640002 is a wasteful number, since it uses less digits than its factorization.

1545640002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175775 (or 175769 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1545640002 is about 39314.6283462021. The cubic root of 1545640002 is about 1156.2083895539.

The spelling of 1545640002 in words is "one billion, five hundred forty-five million, six hundred forty thousand, two".