18961794 has 24 divisors (see below), whose sum is σ = 41164032. Its totient is φ = 6308280.

The previous prime is 18961793. The next prime is 18961807. The reversal of 18961794 is 49716981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18961793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17307 + ... + 18369.

It is an arithmetic number, because the mean of its divisors is an integer number (1715168).

Almost surely, 2^18961794 is an apocalyptic number.

18961794 is an abundant number, since it is smaller than the sum of its proper divisors (22202238).

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

18961794 is a wasteful number, since it uses less digits than its factorization.

18961794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2059 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 18961794 is about 4354.5142094153. The cubic root of 18961794 is about 266.6611870402.

The spelling of 18961794 in words is "eighteen million, nine hundred sixty-one thousand, seven hundred ninety-four".