74151381 has 8 divisors (see below), whose sum is σ = 98962560. Its totient is φ = 49387232.

The previous prime is 74151361. The next prime is 74151397. The reversal of 74151381 is 18315147.

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 74151381 - 2⁶ = 74151317 is a prime.

It is a super-2 number, since 2×74151381² = 10996854608414322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74151361) 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, 7896 + ... + 14513.

It is an arithmetic number, because the mean of its divisors is an integer number (12370320).

Almost surely, 2^74151381 is an apocalyptic number.

It is an amenable number.

74151381 is a deficient number, since it is larger than the sum of its proper divisors (24811179).

74151381 is a wasteful number, since it uses less digits than its factorization.

74151381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23515.

The product of its digits is 3360, while the sum is 30.

The square root of 74151381 is about 8611.1196136159. The cubic root of 74151381 is about 420.1197334369.

The spelling of 74151381 in words is "seventy-four million, one hundred fifty-one thousand, three hundred eighty-one".