18797946 has 16 divisors (see below), whose sum is σ = 39230784. Its totient is φ = 5993504.

The previous prime is 18797941. The next prime is 18797951. The reversal of 18797946 is 64979781.

It is an interprime number because it is at equal distance from previous prime (18797941) and next prime (18797951).

It is not an unprimeable number, because it can be changed into a prime (18797941) 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, 67971 + ... + 68246.

It is an arithmetic number, because the mean of its divisors is an integer number (2451924).

Almost surely, 2^18797946 is an apocalyptic number.

18797946 is an abundant number, since it is smaller than the sum of its proper divisors (20432838).

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

18797946 is a wasteful number, since it uses less digits than its factorization.

18797946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136245.

The product of its digits is 762048, while the sum is 51.

The square root of 18797946 is about 4335.6598113782. The cubic root of 18797946 is about 265.8908950100.

The spelling of 18797946 in words is "eighteen million, seven hundred ninety-seven thousand, nine hundred forty-six".