1956749620 has 48 divisors (see below), whose sum is σ = 4732092288. Its totient is φ = 665758080.

The previous prime is 1956749617. The next prime is 1956749653. The reversal of 1956749620 is 269476591.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35007 + ... + 71686.

It is an arithmetic number, because the mean of its divisors is an integer number (98585256).

Almost surely, 2^1956749620 is an apocalyptic number.

1956749620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1956749620 is an abundant number, since it is smaller than the sum of its proper divisors (2775342668).

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

1956749620 is a wasteful number, since it uses less digits than its factorization.

1956749620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106840 (or 106838 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1956749620 is about 44235.1627102241. The cubic root of 1956749620 is about 1250.7727744240.

The spelling of 1956749620 in words is "one billion, nine hundred fifty-six million, seven hundred forty-nine thousand, six hundred twenty".