1138887523990 has 16 divisors (see below), whose sum is σ = 2050038681120. Its totient is φ = 455545867840.

The previous prime is 1138887523979. The next prime is 1138887523993. The reversal of 1138887523990 is 993257888311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138887523993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607546 + ... + 1626925.

It is an arithmetic number, because the mean of its divisors is an integer number (128127417570).

Almost surely, 2^{1138887523990} is an apocalyptic number.

1138887523990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138887523990 is a deficient number, since it is larger than the sum of its proper divisors (911151157130).

1138887523990 is a wasteful number, since it uses less digits than its factorization.

1138887523990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285447.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 1138887523990 in words is "one trillion, one hundred thirty-eight billion, eight hundred eighty-seven million, five hundred twenty-three thousand, nine hundred ninety".