1138387498 has 16 divisors (see below), whose sum is σ = 1724785920. Its totient is φ = 563468400.

The previous prime is 1138387483. The next prime is 1138387501. The reversal of 1138387498 is 8947838311.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406483 + ... + 409273.

It is an arithmetic number, because the mean of its divisors is an integer number (107799120).

Almost surely, 2^1138387498 is an apocalyptic number.

1138387498 is a deficient number, since it is larger than the sum of its proper divisors (586398422).

1138387498 is a wasteful number, since it uses less digits than its factorization.

1138387498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773.

The product of its digits is 1161216, while the sum is 52.

The square root of 1138387498 is about 33739.9984884410. The cubic root of 1138387498 is about 1044.1511533517.

The spelling of 1138387498 in words is "one billion, one hundred thirty-eight million, three hundred eighty-seven thousand, four hundred ninety-eight".