1149676381 has 4 divisors (see below), whose sum is σ = 1313915872. Its totient is φ = 985436892.

The previous prime is 1149676369. The next prime is 1149676397. The reversal of 1149676381 is 1836769411.

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: 1836769411 = 28771 ⋅63841.

It is a cyclic number.

It is not a de Polignac number, because 1149676381 - 2⁹ = 1149675869 is a prime.

It is a super-2 number, since 2×1149676381² = 2643511562058514322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149676331) 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, 82119735 + ... + 82119748.

It is an arithmetic number, because the mean of its divisors is an integer number (328478968).

Almost surely, 2^1149676381 is an apocalyptic number.

It is an amenable number.

1149676381 is a deficient number, since it is larger than the sum of its proper divisors (164239491).

1149676381 is an equidigital number, since it uses as much as digits as its factorization.

1149676381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164239490.

The product of its digits is 217728, while the sum is 46.

The square root of 1149676381 is about 33906.8780780537. The cubic root of 1149676381 is about 1047.5912679385.

The spelling of 1149676381 in words is "one billion, one hundred forty-nine million, six hundred seventy-six thousand, three hundred eighty-one".