18961036 has 6 divisors (see below), whose sum is σ = 33181820. Its totient is φ = 9480516.

The previous prime is 18961009. The next prime is 18961043. The reversal of 18961036 is 63016981.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 18960992 and 18961010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2370126 + ... + 2370133.

Almost surely, 2^18961036 is an apocalyptic number.

It is an amenable number.

18961036 is a deficient number, since it is larger than the sum of its proper divisors (14220784).

18961036 is a wasteful number, since it uses less digits than its factorization.

18961036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740263 (or 4740261 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 18961036 is about 4354.4271724304. The cubic root of 18961036 is about 266.6576337218.

The spelling of 18961036 in words is "eighteen million, nine hundred sixty-one thousand, thirty-six".