1900180323 has 16 divisors (see below), whose sum is σ = 2840912800. Its totient is φ = 1255163040.

The previous prime is 1900180319. The next prime is 1900180339. The reversal of 1900180323 is 3230810091.

It is not a de Polignac number, because 1900180323 - 2² = 1900180319 is a prime.

It is a super-2 number, since 2×1900180323² = 7221370519832768658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1900180393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319888 + ... + 325773.

It is an arithmetic number, because the mean of its divisors is an integer number (177557050).

Almost surely, 2^1900180323 is an apocalyptic number.

1900180323 is a deficient number, since it is larger than the sum of its proper divisors (940732477).

1900180323 is a wasteful number, since it uses less digits than its factorization.

1900180323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645779 (or 645773 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1900180323 is about 43591.0578330006. The cubic root of 1900180323 is about 1238.6015110705.

The spelling of 1900180323 in words is "one billion, nine hundred million, one hundred eighty thousand, three hundred twenty-three".