18907390350 has 288 divisors, whose sum is σ = 55108347840. Its totient is φ = 4634910720.

The previous prime is 18907390321. The next prime is 18907390367. The reversal of 18907390350 is 5309370981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 18907390296 and 18907390305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 37145896 + ... + 37146404.

It is an arithmetic number, because the mean of its divisors is an integer number (191348430).

Almost surely, 2^18907390350 is an apocalyptic number.

18907390350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18907390350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27554173920).

18907390350 is an abundant number, since it is smaller than the sum of its proper divisors (36200957490).

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

18907390350 is a wasteful number, since it uses less digits than its factorization.

18907390350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 18907390350 in words is "eighteen billion, nine hundred seven million, three hundred ninety thousand, three hundred fifty".