1387513790 has 32 divisors (see below), whose sum is σ = 2746880640. Its totient is φ = 501410304.

The previous prime is 1387513789. The next prime is 1387513793. The reversal of 1387513790 is 973157831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387513793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107435 + ... + 119654.

It is an arithmetic number, because the mean of its divisors is an integer number (85840020).

Almost surely, 2^1387513790 is an apocalyptic number.

1387513790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387513790 is a deficient number, since it is larger than the sum of its proper divisors (1359366850).

1387513790 is a wasteful number, since it uses less digits than its factorization.

1387513790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227156.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1387513790 is about 37249.3461687585. The cubic root of 1387513790 is about 1115.3532472815.

The spelling of 1387513790 in words is "one billion, three hundred eighty-seven million, five hundred thirteen thousand, seven hundred ninety".