1868726530 has 64 divisors (see below), whose sum is σ = 3893909760. Its totient is φ = 638156800.

The previous prime is 1868726473. The next prime is 1868726597. The reversal of 1868726530 is 356278681.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197891 + ... + 1199449.

It is an arithmetic number, because the mean of its divisors is an integer number (60842340).

Almost surely, 2^1868726530 is an apocalyptic number.

1868726530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868726530 is an abundant number, since it is smaller than the sum of its proper divisors (2025183230).

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

1868726530 is a wasteful number, since it uses less digits than its factorization.

1868726530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 1868726530 is about 43228.7697025951. The cubic root of 1868726530 is about 1231.7292376142.

The spelling of 1868726530 in words is "one billion, eight hundred sixty-eight million, seven hundred twenty-six thousand, five hundred thirty".