18741764 has 6 divisors (see below), whose sum is σ = 32798094. Its totient is φ = 9370880.

The previous prime is 18741761. The next prime is 18741773. The reversal of 18741764 is 46714781.

It can be written as a sum of positive squares in only one way, i.e., 11505664 + 7236100 = 3392^2 + 2690^2 .

It is not an unprimeable number, because it can be changed into a prime (18741761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2342717 + ... + 2342724.

It is an arithmetic number, because the mean of its divisors is an integer number (5466349).

Almost surely, 2^18741764 is an apocalyptic number.

It is an amenable number.

18741764 is a deficient number, since it is larger than the sum of its proper divisors (14056330).

18741764 is a wasteful number, since it uses less digits than its factorization.

18741764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685445 (or 4685443 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 18741764 is about 4329.1759031021. The cubic root of 18741764 is about 265.6257385723.

The spelling of 18741764 in words is "eighteen million, seven hundred forty-one thousand, seven hundred sixty-four".