1949879436 has 24 divisors (see below), whose sum is σ = 4626834240. Its totient is φ = 638943312.

The previous prime is 1949879431. The next prime is 1949879443. The reversal of 1949879436 is 6349789491.

It is a self number, because there is not a number n which added to its sum of digits gives 1949879436.

It is not an unprimeable number, because it can be changed into a prime (1949879431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376326 + ... + 1377741.

It is an arithmetic number, because the mean of its divisors is an integer number (192784760).

Almost surely, 2^1949879436 is an apocalyptic number.

It is an amenable number.

1949879436 is an abundant number, since it is smaller than the sum of its proper divisors (2676954804).

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

1949879436 is a wasteful number, since it uses less digits than its factorization.

1949879436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754133 (or 2754131 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 60.

The square root of 1949879436 is about 44157.4391920546. The cubic root of 1949879436 is about 1249.3072291391.

The spelling of 1949879436 in words is "one billion, nine hundred forty-nine million, eight hundred seventy-nine thousand, four hundred thirty-six".