1379278998 has 24 divisors (see below), whose sum is σ = 3008234736. Its totient is φ = 456714000.

The previous prime is 1379278997. The next prime is 1379279021. The reversal of 1379278998 is 8998729731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379278993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251013 + ... + 256448.

It is an arithmetic number, because the mean of its divisors is an integer number (125343114).

Almost surely, 2^1379278998 is an apocalyptic number.

1379278998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1379278998 is an abundant number, since it is smaller than the sum of its proper divisors (1628955738).

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

1379278998 is a wasteful number, since it uses less digits than its factorization.

1379278998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507620 (or 507617 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 1379278998 is about 37138.6456134308. The cubic root of 1379278998 is about 1113.1423545829.

The spelling of 1379278998 in words is "one billion, three hundred seventy-nine million, two hundred seventy-eight thousand, nine hundred ninety-eight".