1972605136 has 40 divisors (see below), whose sum is σ = 3866280320. Its totient is φ = 974923776.

The previous prime is 1972605121. The next prime is 1972605157. The reversal of 1972605136 is 6315062791.

It is a congruent number.

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, 501385 + ... + 505303.

It is an arithmetic number, because the mean of its divisors is an integer number (96657008).

Almost surely, 2^1972605136 is an apocalyptic number.

1972605136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1972605136 is a deficient number, since it is larger than the sum of its proper divisors (1893675184).

1972605136 is a wasteful number, since it uses less digits than its factorization.

1972605136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4277 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1972605136 is about 44414.0195884137. The cubic root of 1972605136 is about 1254.1420221091.

The spelling of 1972605136 in words is "one billion, nine hundred seventy-two million, six hundred five thousand, one hundred thirty-six".