74198151 has 24 divisors (see below), whose sum is σ = 110388096. Its totient is φ = 47996160.

The previous prime is 74198147. The next prime is 74198167. The reversal of 74198151 is 15189147.

It is not a de Polignac number, because 74198151 - 2² = 74198147 is a prime.

It is a super-2 number, since 2×74198151² = 11010731223637602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74198141) 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, 85546 + ... + 86408.

It is an arithmetic number, because the mean of its divisors is an integer number (4599504).

Almost surely, 2^74198151 is an apocalyptic number.

74198151 is a deficient number, since it is larger than the sum of its proper divisors (36189945).

74198151 is a wasteful number, since it uses less digits than its factorization.

74198151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1140 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 74198151 is about 8613.8348602698. The cubic root of 74198151 is about 420.2080431892.

The spelling of 74198151 in words is "seventy-four million, one hundred ninety-eight thousand, one hundred fifty-one".