1864728234 has 24 divisors (see below), whose sum is σ = 4041273600. Its totient is φ = 621417768.

The previous prime is 1864728199. The next prime is 1864728247. The reversal of 1864728234 is 4328274681.

It is a happy number.

It is a super-2 number, since 2×1864728234² = 6954422773353517512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1864728234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75589 + ... + 97175.

It is an arithmetic number, because the mean of its divisors is an integer number (168386400).

Almost surely, 2^1864728234 is an apocalyptic number.

1864728234 is an abundant number, since it is smaller than the sum of its proper divisors (2176545366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1864728234 is a wasteful number, since it uses less digits than its factorization.

1864728234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26394 (or 26391 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 1864728234 is about 43182.4991634343. The cubic root of 1864728234 is about 1230.8501479350.

The spelling of 1864728234 in words is "one billion, eight hundred sixty-four million, seven hundred twenty-eight thousand, two hundred thirty-four".