1398812604 has 72 divisors (see below), whose sum is σ = 3996639360. Its totient is φ = 378622944.

The previous prime is 1398812603. The next prime is 1398812617. The reversal of 1398812604 is 4062188931.

It is a super-2 number, since 2×1398812604² = 3913353402218521632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398812603) 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, 51432 + ... + 73775.

It is an arithmetic number, because the mean of its divisors is an integer number (55508880).

Almost surely, 2^1398812604 is an apocalyptic number.

1398812604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1398812604 is an abundant number, since it is smaller than the sum of its proper divisors (2597826756).

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

1398812604 is a wasteful number, since it uses less digits than its factorization.

1398812604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125247 (or 125238 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1398812604 is about 37400.7032554202. The cubic root of 1398812604 is about 1118.3725843462.

The spelling of 1398812604 in words is "one billion, three hundred ninety-eight million, eight hundred twelve thousand, six hundred four".