1868472705 has 64 divisors (see below), whose sum is σ = 3361720320. Its totient is φ = 878323200.

The previous prime is 1868472649. The next prime is 1868472713. The reversal of 1868472705 is 5072748681.

It is not a de Polignac number, because 1868472705 - 2¹⁴ = 1868456321 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1210164 + ... + 1211706.

It is an arithmetic number, because the mean of its divisors is an integer number (52526880).

Almost surely, 2^1868472705 is an apocalyptic number.

1868472705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1868472705 is a deficient number, since it is larger than the sum of its proper divisors (1493247615).

1868472705 is a wasteful number, since it uses less digits than its factorization.

1868472705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 1868472705 is about 43225.8337687083. The cubic root of 1868472705 is about 1231.6734674012.

The spelling of 1868472705 in words is "one billion, eight hundred sixty-eight million, four hundred seventy-two thousand, seven hundred five".