18561962 has 8 divisors (see below), whose sum is σ = 27876000. Its totient is φ = 9269964.

The previous prime is 18561941. The next prime is 18561967. The reversal of 18561962 is 26916581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18561967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3212 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (3484500).

Almost surely, 2^18561962 is an apocalyptic number.

18561962 is a deficient number, since it is larger than the sum of its proper divisors (9314038).

18561962 is a wasteful number, since it uses less digits than its factorization.

18561962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020.

The product of its digits is 25920, while the sum is 38.

The square root of 18561962 is about 4308.3595485985. The cubic root of 18561962 is about 264.7735671080.

The spelling of 18561962 in words is "eighteen million, five hundred sixty-one thousand, nine hundred sixty-two".