18941670 has 144 divisors (see below), whose sum is σ = 57771792. Its totient is φ = 4268160.

The previous prime is 18941633. The next prime is 18941707. The reversal of 18941670 is 7614981.

It is an interprime number because it is at equal distance from previous prime (18941633) and next prime (18941707).

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 polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 357364 + ... + 357416.

It is an arithmetic number, because the mean of its divisors is an integer number (401193).

Almost surely, 2^18941670 is an apocalyptic number.

18941670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18941670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28885896).

18941670 is an abundant number, since it is smaller than the sum of its proper divisors (38830122).

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

18941670 is a wasteful number, since it uses less digits than its factorization.

18941670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 18941670 is about 4352.2028904912. The cubic root of 18941670 is about 266.5668185212.

The spelling of 18941670 in words is "eighteen million, nine hundred forty-one thousand, six hundred seventy".