1387637763890 has 16 divisors (see below), whose sum is σ = 2854569114432. Its totient is φ = 475761519024.

The previous prime is 1387637763881. The next prime is 1387637763917. The reversal of 1387637763890 is 983677367831.

It is a self number, because there is not a number n which added to its sum of digits gives 1387637763890.

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, 9911698244 + ... + 9911698383.

It is an arithmetic number, because the mean of its divisors is an integer number (178410569652).

Almost surely, 2^{1387637763890} is an apocalyptic number.

1387637763890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387637763890 is an abundant number, since it is smaller than the sum of its proper divisors (1466931350542).

1387637763890 is a wasteful number, since it uses less digits than its factorization.

1387637763890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19823396641.

The product of its (nonzero) digits is 192036096, while the sum is 68.

The spelling of 1387637763890 in words is "one trillion, three hundred eighty-seven billion, six hundred thirty-seven million, seven hundred sixty-three thousand, eight hundred ninety".