1101920291 has 16 divisors (see below), whose sum is σ = 1130606400. Its totient is φ = 1073737728.

The previous prime is 1101920269. The next prime is 1101920321. The reversal of 1101920291 is 1920291011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101920291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101920291.

It is not an unprimeable number, because it can be changed into a prime (1101920231) 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, 2509850 + ... + 2510288.

It is an arithmetic number, because the mean of its divisors is an integer number (70662900).

Almost surely, 2^1101920291 is an apocalyptic number.

1101920291 is a deficient number, since it is larger than the sum of its proper divisors (28686109).

1101920291 is a wasteful number, since it uses less digits than its factorization.

1101920291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 1101920291 is about 33195.1847562263. The cubic root of 1101920291 is about 1032.8804566177.

The spelling of 1101920291 in words is "one billion, one hundred one million, nine hundred twenty thousand, two hundred ninety-one".