1149679261 has 16 divisors (see below), whose sum is σ = 1203484480. Its totient is φ = 1097349120.

The previous prime is 1149679259. The next prime is 1149679273. The reversal of 1149679261 is 1629769411.

It is a cyclic number.

It is not a de Polignac number, because 1149679261 - 2¹ = 1149679259 is a prime.

It is a super-2 number, since 2×1149679261² = 2643524806347012242, 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 (1149679291) 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, 426205 + ... + 428893.

It is an arithmetic number, because the mean of its divisors is an integer number (75217780).

Almost surely, 2^1149679261 is an apocalyptic number.

It is an amenable number.

1149679261 is a deficient number, since it is larger than the sum of its proper divisors (53805219).

1149679261 is a wasteful number, since it uses less digits than its factorization.

1149679261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956.

The product of its digits is 163296, while the sum is 46.

The square root of 1149679261 is about 33906.9205472865. The cubic root of 1149679261 is about 1047.5921426949.

The spelling of 1149679261 in words is "one billion, one hundred forty-nine million, six hundred seventy-nine thousand, two hundred sixty-one".