74161378 has 8 divisors (see below), whose sum is σ = 117785772. Its totient is φ = 34899456.

The previous prime is 74161319. The next prime is 74161397. The reversal of 74161378 is 87316147.

It can be written as a sum of positive squares in 2 ways, for example, as 74011609 + 149769 = 8603^2 + 387^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090575 + ... + 1090642.

Almost surely, 2^74161378 is an apocalyptic number.

74161378 is a deficient number, since it is larger than the sum of its proper divisors (43624394).

74161378 is a wasteful number, since it uses less digits than its factorization.

74161378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181236.

The product of its digits is 28224, while the sum is 37.

The square root of 74161378 is about 8611.7000644472. The cubic root of 74161378 is about 420.1386126009.

The spelling of 74161378 in words is "seventy-four million, one hundred sixty-one thousand, three hundred seventy-eight".