18190629228961 has 8 divisors (see below), whose sum is σ = 20789590492160. Its totient is φ = 15591742951968.

The previous prime is 18190629228949. The next prime is 18190629228983. The reversal of 18190629228961 is 16982292609181.

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

It is a cyclic number.

It is not a de Polignac number, because 18190629228961 - 2¹³ = 18190629220769 is a prime.

It is a super-2 number, since 2×18190629228961² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18190629228893 and 18190629228902.

It is not an unprimeable number, because it can be changed into a prime (18190629228901) 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, 18225756 + ... + 19197901.

It is an arithmetic number, because the mean of its divisors is an integer number (2598698811520).

Almost surely, 2^{18190629228961} is an apocalyptic number.

It is an amenable number.

18190629228961 is a deficient number, since it is larger than the sum of its proper divisors (2598961263199).

18190629228961 is an equidigital number, since it uses as much as digits as its factorization.

18190629228961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37493103.

The product of its (nonzero) digits is 13436928, while the sum is 64.

The spelling of 18190629228961 in words is "eighteen trillion, one hundred ninety billion, six hundred twenty-nine million, two hundred twenty-eight thousand, nine hundred sixty-one".