18920350 has 12 divisors (see below), whose sum is σ = 35191944. Its totient is φ = 7568120.

The previous prime is 18920347. The next prime is 18920353. The reversal of 18920350 is 5302981.

It is an interprime number because it is at equal distance from previous prime (18920347) and next prime (18920353).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18920353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189154 + ... + 189253.

It is an arithmetic number, because the mean of its divisors is an integer number (2932662).

Almost surely, 2^18920350 is an apocalyptic number.

18920350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18920350 is a deficient number, since it is larger than the sum of its proper divisors (16271594).

18920350 is a wasteful number, since it uses less digits than its factorization.

18920350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378419 (or 378414 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 18920350 is about 4349.7528665431. The cubic root of 18920350 is about 266.4667685931.

The spelling of 18920350 in words is "eighteen million, nine hundred twenty thousand, three hundred fifty".