18713629 has 4 divisors (see below), whose sum is σ = 20414880. Its totient is φ = 17012380.

The previous prime is 18713603. The next prime is 18713633. The reversal of 18713629 is 92631781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92631781 = 11 ⋅8421071.

It is not a de Polignac number, because 18713629 - 2⁷ = 18713501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850609 + ... + 850630.

It is an arithmetic number, because the mean of its divisors is an integer number (5103720).

Almost surely, 2^18713629 is an apocalyptic number.

It is an amenable number.

18713629 is a deficient number, since it is larger than the sum of its proper divisors (1701251).

18713629 is a wasteful number, since it uses less digits than its factorization.

18713629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701250.

The product of its digits is 18144, while the sum is 37.

The square root of 18713629 is about 4325.9252189561. The cubic root of 18713629 is about 265.4927535282.

The spelling of 18713629 in words is "eighteen million, seven hundred thirteen thousand, six hundred twenty-nine".