1538874623 has 24 divisors (see below), whose sum is σ = 1825482096. Its totient is φ = 1285939200.

The previous prime is 1538874577. The next prime is 1538874637. The reversal of 1538874623 is 3264788351.

It is not a de Polignac number, because 1538874623 - 2¹⁰ = 1538873599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538874643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476153 + ... + 479373.

It is an arithmetic number, because the mean of its divisors is an integer number (76061754).

Almost surely, 2^1538874623 is an apocalyptic number.

1538874623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1538874623 is a deficient number, since it is larger than the sum of its proper divisors (286607473).

1538874623 is a wasteful number, since it uses less digits than its factorization.

1538874623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515 (or 3502 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 1538874623 is about 39228.4924895158. The cubic root of 1538874623 is about 1154.5189861257.

The spelling of 1538874623 in words is "one billion, five hundred thirty-eight million, eight hundred seventy-four thousand, six hundred twenty-three".