1149999961 has 8 divisors (see below), whose sum is σ = 1254792384. Its totient is φ = 1045248720.

The previous prime is 1149999899. The next prime is 1149999967. The reversal of 1149999961 is 1699999411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1149999961 - 2⁹ = 1149999449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1149999896 and 1149999905.

It is not an unprimeable number, because it can be changed into a prime (1149999967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94740 + ... + 106186.

It is an arithmetic number, because the mean of its divisors is an integer number (156849048).

Almost surely, 2^1149999961 is an apocalyptic number.

1149999961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1149999961 is a deficient number, since it is larger than the sum of its proper divisors (104792423).

1149999961 is a wasteful number, since it uses less digits than its factorization.

1149999961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20591.

The product of its digits is 1417176, while the sum is 58.

The square root of 1149999961 is about 33911.6493406027. The cubic root of 1149999961 is about 1047.6895413282.

The spelling of 1149999961 in words is "one billion, one hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred sixty-one".