1142770816 has 32 divisors (see below), whose sum is σ = 2483581680. Its totient is φ = 519440640.

The previous prime is 1142770793. The next prime is 1142770817. The reversal of 1142770816 is 6180772411.

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

It is not an unprimeable number, because it can be changed into a prime (1142770817) 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, 404406 + ... + 407221.

Almost surely, 2^1142770816 is an apocalyptic number.

1142770816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1142770816 is an abundant number, since it is smaller than the sum of its proper divisors (1340810864).

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

1142770816 is an equidigital number, since it uses as much as digits as its factorization.

1142770816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811652 (or 811640 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1142770816 is about 33804.8933735931. The cubic root of 1142770816 is about 1045.4895917898.

The spelling of 1142770816 in words is "one billion, one hundred forty-two million, seven hundred seventy thousand, eight hundred sixteen".