18961652 has 6 divisors (see below), whose sum is σ = 33182898. Its totient is φ = 9480824.

The previous prime is 18961643. The next prime is 18961661. The reversal of 18961652 is 25616981.

It is an interprime number because it is at equal distance from previous prime (18961643) and next prime (18961661).

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 6948496 = 3466^2 + 2636^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2370203 + ... + 2370210.

It is an arithmetic number, because the mean of its divisors is an integer number (5530483).

Almost surely, 2^18961652 is an apocalyptic number.

It is an amenable number.

18961652 is a deficient number, since it is larger than the sum of its proper divisors (14221246).

18961652 is a wasteful number, since it uses less digits than its factorization.

18961652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740417 (or 4740415 counting only the distinct ones).

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

The square root of 18961652 is about 4354.4979044661. The cubic root of 18961652 is about 266.6605213862.

The spelling of 18961652 in words is "eighteen million, nine hundred sixty-one thousand, six hundred fifty-two".