1121490769 has 16 divisors (see below), whose sum is σ = 1301258880. Its totient is φ = 946713600.

The previous prime is 1121490743. The next prime is 1121490779. The reversal of 1121490769 is 9670941211.

It is not a de Polignac number, because 1121490769 - 2²¹ = 1119393617 is a prime.

It is a super-2 number, since 2×1121490769² = 2515483089904422722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121490709) 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, 132342 + ... + 140560.

It is an arithmetic number, because the mean of its divisors is an integer number (81328680).

Almost surely, 2^1121490769 is an apocalyptic number.

It is an amenable number.

1121490769 is a deficient number, since it is larger than the sum of its proper divisors (179768111).

1121490769 is a wasteful number, since it uses less digits than its factorization.

1121490769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1121490769 is about 33488.6662768167. Note that the first 3 decimals coincide. The cubic root of 1121490769 is about 1038.9593785443.

The spelling of 1121490769 in words is "one billion, one hundred twenty-one million, four hundred ninety thousand, seven hundred sixty-nine".