1390388621058 has 80 divisors (see below), whose sum is σ = 3123265068000. Its totient is φ = 462308762304.

The previous prime is 1390388620909. The next prime is 1390388621059. The reversal of 1390388621058 is 8501268830931.

1390388621058 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 3 + 8 + 8 + 621 + 0 + 5 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1390388620995 and 1390388621013.

It is not an unprimeable number, because it can be changed into a prime (1390388621059) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 290448541 + ... + 290453327.

It is an arithmetic number, because the mean of its divisors is an integer number (39040813350).

Almost surely, 2^{1390388621058} is an apocalyptic number.

1390388621058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1390388621058 is an abundant number, since it is smaller than the sum of its proper divisors (1732876446942).

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

1390388621058 is a wasteful number, since it uses less digits than its factorization.

1390388621058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893 (or 8884 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1390388621058 in words is "one trillion, three hundred ninety billion, three hundred eighty-eight million, six hundred twenty-one thousand, fifty-eight".