618151401 has 24 divisors (see below), whose sum is σ = 1025747840. Its totient is φ = 351392256.

The previous prime is 618151397. The next prime is 618151421. The reversal of 618151401 is 104151816.

618151401 = T₁₉₈ + T₁₉₉ + ... + T₁₅₄₈.

618151401 is a `hidden beast` number, since 618 + 1 + 5 + 1 + 40 + 1 = 666.

It is not a de Polignac number, because 618151401 - 2² = 618151397 is a prime.

It is a super-2 number, since 2×618151401² = 764222309116525602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (618151421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13261 + ... + 37578.

Almost surely, 2^618151401 is an apocalyptic number.

It is an amenable number.

618151401 is a deficient number, since it is larger than the sum of its proper divisors (407596439).

618151401 is a wasteful number, since it uses less digits than its factorization.

618151401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51045 (or 51042 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 618151401 is about 24862.6507235250. The cubic root of 618151401 is about 851.8535794472.

The spelling of 618151401 in words is "six hundred eighteen million, one hundred fifty-one thousand, four hundred one".