15381953890 has 16 divisors (see below), whose sum is σ = 27832481280. Its totient is φ = 6120567280.

The previous prime is 15381953879. The next prime is 15381953893. The reversal of 15381953890 is 9835918351.

It is a super-2 number, since 2×15381953890² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15381953893) 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, 4024780 + ... + 4028599.

It is an arithmetic number, because the mean of its divisors is an integer number (1739530080).

Almost surely, 2^15381953890 is an apocalyptic number.

15381953890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15381953890 is a deficient number, since it is larger than the sum of its proper divisors (12450527390).

15381953890 is a wasteful number, since it uses less digits than its factorization.

15381953890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053577.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 15381953890 in words is "fifteen billion, three hundred eighty-one million, nine hundred fifty-three thousand, eight hundred ninety".