1091794764 has 48 divisors (see below), whose sum is σ = 2597293440. Its totient is φ = 356955664.

The previous prime is 1091794763. The next prime is 1091794771. The reversal of 1091794764 is 4674971901.

It is not an unprimeable number, because it can be changed into a prime (1091794763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2464327 + ... + 2464769.

It is an arithmetic number, because the mean of its divisors is an integer number (54110280).

Almost surely, 2^1091794764 is an apocalyptic number.

It is an amenable number.

1091794764 is an abundant number, since it is smaller than the sum of its proper divisors (1505498676).

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

1091794764 is an frugal number, since it uses more digits than its factorization.

1091794764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1091794764 is about 33042.3177758462. The cubic root of 1091794764 is about 1029.7070093847.

The spelling of 1091794764 in words is "one billion, ninety-one million, seven hundred ninety-four thousand, seven hundred sixty-four".