1939374536 has 256 divisors, whose sum is σ = 4727808000. Its totient is φ = 734469120.

The previous prime is 1939374533. The next prime is 1939374553. The reversal of 1939374536 is 6354739391.

It is a super-2 number, since 2×1939374536² = 7522347181770430592, which contains 22 as substring.

Its product of digits (1837080) is a multiple of the sum of its prime divisors (168).

It is not an unprimeable number, because it can be changed into a prime (1939374533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41263265 + ... + 41263311.

It is an arithmetic number, because the mean of its divisors is an integer number (18468000).

Almost surely, 2^1939374536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939374536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363904000).

1939374536 is an abundant number, since it is smaller than the sum of its proper divisors (2788433464).

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

1939374536 is a wasteful number, since it uses less digits than its factorization.

1939374536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 168 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 50.

The square root of 1939374536 is about 44038.3303044064. The cubic root of 1939374536 is about 1247.0596566078.

The spelling of 1939374536 in words is "one billion, nine hundred thirty-nine million, three hundred seventy-four thousand, five hundred thirty-six".