1081949312 has 32 divisors (see below), whose sum is σ = 2170988400. Its totient is φ = 537073920.

The previous prime is 1081949251. The next prime is 1081949317. The reversal of 1081949312 is 2139491801.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1081949312² = 2341228627474546688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1081949317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12614 + ... + 48197.

Almost surely, 2^1081949312 is an apocalyptic number.

It is an amenable number.

1081949312 is an abundant number, since it is smaller than the sum of its proper divisors (1089039088).

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

1081949312 is an equidigital number, since it uses as much as digits as its factorization.

1081949312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60964 (or 60952 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1081949312 is about 32892.9979174900. The cubic root of 1081949312 is about 1026.6024704523.

The spelling of 1081949312 in words is "one billion, eighty-one million, nine hundred forty-nine thousand, three hundred twelve".