1131653874 has 64 divisors (see below), whose sum is σ = 2550320640. Its totient is φ = 332436480.

The previous prime is 1131653869. The next prime is 1131653879. The reversal of 1131653874 is 4783561311.

It is an interprime number because it is at equal distance from previous prime (1131653869) and next prime (1131653879).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1131653879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146542 + ... + 154070.

It is an arithmetic number, because the mean of its divisors is an integer number (39848760).

Almost surely, 2^1131653874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131653874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275160320).

1131653874 is an abundant number, since it is smaller than the sum of its proper divisors (1418666766).

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

1131653874 is a wasteful number, since it uses less digits than its factorization.

1131653874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635.

The product of its digits is 60480, while the sum is 39.

The square root of 1131653874 is about 33640.0635255048. The cubic root of 1131653874 is about 1042.0883438151.

The spelling of 1131653874 in words is "one billion, one hundred thirty-one million, six hundred fifty-three thousand, eight hundred seventy-four".