180399374 has 4 divisors (see below), whose sum is σ = 270599064. Its totient is φ = 90199686.

The previous prime is 180399371. The next prime is 180399377. The reversal of 180399374 is 473993081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473993081 = 29 ⋅16344589.

It is an interprime number because it is at equal distance from previous prime (180399371) and next prime (180399377).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180399371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45099842 + ... + 45099845.

It is an arithmetic number, because the mean of its divisors is an integer number (67649766).

Almost surely, 2^180399374 is an apocalyptic number.

180399374 is a deficient number, since it is larger than the sum of its proper divisors (90199690).

180399374 is an equidigital number, since it uses as much as digits as its factorization.

180399374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90199689.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 180399374 is about 13431.2834085206. The cubic root of 180399374 is about 565.0388925638.

The spelling of 180399374 in words is "one hundred eighty million, three hundred ninety-nine thousand, three hundred seventy-four".