2138503464 has 64 divisors (see below), whose sum is σ = 6021705600. Its totient is φ = 703064448.

The previous prime is 2138503459. The next prime is 2138503483. The reversal of 2138503464 is 4643058312.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 52044 + ... + 83579.

It is an arithmetic number, because the mean of its divisors is an integer number (94089150).

Almost surely, 2^2138503464 is an apocalyptic number.

2138503464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2138503464 is an abundant number, since it is smaller than the sum of its proper divisors (3883202136).

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

2138503464 is a wasteful number, since it uses less digits than its factorization.

2138503464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135711 (or 135701 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2138503464 is about 46243.9559726458. The cubic root of 2138503464 is about 1288.3582793141.

The spelling of 2138503464 in words is "two billion, one hundred thirty-eight million, five hundred three thousand, four hundred sixty-four".