1969888136 has 32 divisors (see below), whose sum is σ = 3825027360. Its totient is φ = 950433792.

The previous prime is 1969888127. The next prime is 1969888187. The reversal of 1969888136 is 6318889691.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5945 + ... + 63048.

It is an arithmetic number, because the mean of its divisors is an integer number (119532105).

Almost surely, 2^1969888136 is an apocalyptic number.

It is an amenable number.

1969888136 is a deficient number, since it is larger than the sum of its proper divisors (1855139224).

1969888136 is a wasteful number, since it uses less digits than its factorization.

1969888136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69125 (or 69121 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 59.

The square root of 1969888136 is about 44383.4218599693. The cubic root of 1969888136 is about 1253.5659531887.

The spelling of 1969888136 in words is "one billion, nine hundred sixty-nine million, eight hundred eighty-eight thousand, one hundred thirty-six".