18961701 has 8 divisors (see below), whose sum is σ = 27580704. Its totient is φ = 11491920.

The previous prime is 18961699. The next prime is 18961711. The reversal of 18961701 is 10716981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18961701 - 2¹ = 18961699 is a prime.

It is a super-2 number, since 2×18961701² = 719092209626802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 574597 = 18961701 / (1 + 8 + 9 + 6 + 1 + 7 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18961711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287266 + ... + 287331.

It is an arithmetic number, because the mean of its divisors is an integer number (3447588).

Almost surely, 2^18961701 is an apocalyptic number.

18961701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18961701 is a deficient number, since it is larger than the sum of its proper divisors (8619003).

18961701 is a wasteful number, since it uses less digits than its factorization.

18961701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574611.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 18961701 is about 4354.5035308287. The cubic root of 18961701 is about 266.6607510841.

The spelling of 18961701 in words is "eighteen million, nine hundred sixty-one thousand, seven hundred one".