1012405538 has 32 divisors (see below), whose sum is σ = 1653099840. Its totient is φ = 463415040.

The previous prime is 1012405529. The next prime is 1012405547. The reversal of 1012405538 is 8355042101.

It is an interprime number because it is at equal distance from previous prime (1012405529) and next prime (1012405547).

It is a self number, because there is not a number n which added to its sum of digits gives 1012405538.

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, 163670 + ... + 169742.

It is an arithmetic number, because the mean of its divisors is an integer number (51659370).

Almost surely, 2^1012405538 is an apocalyptic number.

1012405538 is a deficient number, since it is larger than the sum of its proper divisors (640694302).

1012405538 is a wasteful number, since it uses less digits than its factorization.

1012405538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1012405538 is about 31818.3207916446. The cubic root of 1012405538 is about 1004.1181965099.

Adding to 1012405538 its reverse (8355042101), we get a palindrome (9367447639).

The spelling of 1012405538 in words is "one billion, twelve million, four hundred five thousand, five hundred thirty-eight".