1149512493 has 4 divisors (see below), whose sum is σ = 1532683328. Its totient is φ = 766341660.

The previous prime is 1149512491. The next prime is 1149512503. The reversal of 1149512493 is 3942159411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3942159411 = 3 ⋅1314053137.

It is not a de Polignac number, because 1149512493 - 2¹ = 1149512491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149512491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191585413 + ... + 191585418.

It is an arithmetic number, because the mean of its divisors is an integer number (383170832).

Almost surely, 2^1149512493 is an apocalyptic number.

It is an amenable number.

1149512493 is a deficient number, since it is larger than the sum of its proper divisors (383170835).

1149512493 is an equidigital number, since it uses as much as digits as its factorization.

1149512493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383170834.

The product of its digits is 38880, while the sum is 39.

The square root of 1149512493 is about 33904.4612551210. The cubic root of 1149512493 is about 1047.5414870322.

The spelling of 1149512493 in words is "one billion, one hundred forty-nine million, five hundred twelve thousand, four hundred ninety-three".