1906862715664 has 45 divisors (see below), whose sum is σ = 3734076473397. Its totient is φ = 943337037312.

The previous prime is 1906862715623. The next prime is 1906862715673. The reversal of 1906862715664 is 4665172686091.

The square root of 1906862715664 is 1380892.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 856254115600 + 1050608600064 = 925340^2 + 1024992^2 .

It is a super-2 number, since 2×1906862715664² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 535784317 + ... + 535787875.

Almost surely, 2^{1906862715664} is an apocalyptic number.

1906862715664 is the 1380892-nd square number.

It is an amenable number.

1906862715664 is a deficient number, since it is larger than the sum of its proper divisors (1827213757733).

1906862715664 is an frugal number, since it uses more digits than its factorization.

1906862715664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320 (or 3658 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 1906862715664 in words is "one trillion, nine hundred six billion, eight hundred sixty-two million, seven hundred fifteen thousand, six hundred sixty-four".