18961452 has 60 divisors (see below), whose sum is σ = 50759016. Its totient is φ = 6168960.

The previous prime is 18961451. The next prime is 18961483. The reversal of 18961452 is 25416981.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (18961451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13252 + ... + 14612.

Almost surely, 2^18961452 is an apocalyptic number.

18961452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18961452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25379508).

18961452 is an abundant number, since it is smaller than the sum of its proper divisors (31797564).

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

18961452 is a wasteful number, since it uses less digits than its factorization.

18961452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1409 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 18961452 is about 4354.4749396454. The cubic root of 18961452 is about 266.6595838397.

The spelling of 18961452 in words is "eighteen million, nine hundred sixty-one thousand, four hundred fifty-two".