1149693520 has 20 divisors (see below), whose sum is σ = 2673037620. Its totient is φ = 459877376.

The previous prime is 1149693511. The next prime is 1149693521. The reversal of 1149693520 is 253969411.

It can be written as a sum of positive squares in 2 ways, for example, as 866242624 + 283450896 = 29432^2 + 16836^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149693521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7185505 + ... + 7185664.

It is an arithmetic number, because the mean of its divisors is an integer number (133651881).

Almost surely, 2^1149693520 is an apocalyptic number.

1149693520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149693520 is an abundant number, since it is smaller than the sum of its proper divisors (1523344100).

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

1149693520 is a wasteful number, since it uses less digits than its factorization.

1149693520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14371182 (or 14371176 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1149693520 is about 33907.1308134439. The cubic root of 1149693520 is about 1047.5964736288.

The spelling of 1149693520 in words is "one billion, one hundred forty-nine million, six hundred ninety-three thousand, five hundred twenty".