1149555677 has 4 divisors (see below), whose sum is σ = 1160299296. Its totient is φ = 1138812060.

The previous prime is 1149555661. The next prime is 1149555683. The reversal of 1149555677 is 7765559411.

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: 7765559411 = 337 ⋅23043203.

It is a cyclic number.

It is not a de Polignac number, because 1149555677 - 2⁴ = 1149555661 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 (1149555647) 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, 5371649 + ... + 5371862.

It is an arithmetic number, because the mean of its divisors is an integer number (290074824).

Almost surely, 2^1149555677 is an apocalyptic number.

It is an amenable number.

1149555677 is a deficient number, since it is larger than the sum of its proper divisors (10743619).

1149555677 is a wasteful number, since it uses less digits than its factorization.

1149555677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10743618.

The product of its digits is 1323000, while the sum is 50.

The square root of 1149555677 is about 33905.0980974838. The cubic root of 1149555677 is about 1047.5546046119.

The spelling of 1149555677 in words is "one billion, one hundred forty-nine million, five hundred fifty-five thousand, six hundred seventy-seven".