375221738 has 4 divisors (see below), whose sum is σ = 562832610. Its totient is φ = 187610868.

The previous prime is 375221731. The next prime is 375221753. The reversal of 375221738 is 837122573.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837122573 = 7 ⋅119588939.

It can be written as a sum of positive squares in only one way, i.e., 373764889 + 1456849 = 19333^2 + 1207^2 .

It is not an unprimeable number, because it can be changed into a prime (375221731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93805433 + ... + 93805436.

Almost surely, 2^375221738 is an apocalyptic number.

375221738 is a deficient number, since it is larger than the sum of its proper divisors (187610872).

375221738 is a wasteful number, since it uses less digits than its factorization.

375221738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187610871.

The product of its digits is 70560, while the sum is 38.

The square root of 375221738 is about 19370.6411354916. The cubic root of 375221738 is about 721.2668911639.

The spelling of 375221738 in words is "three hundred seventy-five million, two hundred twenty-one thousand, seven hundred thirty-eight".