1387981190 has 32 divisors (see below), whose sum is σ = 2556532800. Its totient is φ = 542390400.

The previous prime is 1387981183. The next prime is 1387981223. The reversal of 1387981190 is 911897831.

1387981190 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1387981190² = 3852983567587632200, which contains 22 as substring.

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, 83255 + ... + 98525.

It is an arithmetic number, because the mean of its divisors is an integer number (79891650).

Almost surely, 2^1387981190 is an apocalyptic number.

1387981190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387981190 is a deficient number, since it is larger than the sum of its proper divisors (1168551610).

1387981190 is a wasteful number, since it uses less digits than its factorization.

1387981190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15488.

The product of its (nonzero) digits is 108864, while the sum is 47.

The square root of 1387981190 is about 37255.6195761123. The cubic root of 1387981190 is about 1115.4784730836.

The spelling of 1387981190 in words is "one billion, three hundred eighty-seven million, nine hundred eighty-one thousand, one hundred ninety".