2154687534 has 32 divisors (see below), whose sum is σ = 4795109280. Its totient is φ = 717192000.

The previous prime is 2154687529. The next prime is 2154687583. The reversal of 2154687534 is 4357864512.

2154687534 is a `hidden beast` number, since 2 + 1 + 54 + 68 + 7 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2154687534.

It is a congruent 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, 9394 + ... + 66314.

It is an arithmetic number, because the mean of its divisors is an integer number (149847165).

Almost surely, 2^2154687534 is an apocalyptic number.

2154687534 is an abundant number, since it is smaller than the sum of its proper divisors (2640421746).

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

2154687534 is a wasteful number, since it uses less digits than its factorization.

2154687534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57633 (or 57627 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 2154687534 is about 46418.6119353003. The cubic root of 2154687534 is about 1291.6001883640.

The spelling of 2154687534 in words is "two billion, one hundred fifty-four million, six hundred eighty-seven thousand, five hundred thirty-four".