1154999994 has 16 divisors (see below), whose sum is σ = 2389655520. Its totient is φ = 371724080.

The previous prime is 1154999983. The next prime is 1155000001. The reversal of 1154999994 is 4999994511.

It is a happy number.

It is a super-2 number, since 2×1154999994² = 2668049972280000072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3318792 + ... + 3319139.

It is an arithmetic number, because the mean of its divisors is an integer number (149353470).

Almost surely, 2^1154999994 is an apocalyptic number.

1154999994 is an abundant number, since it is smaller than the sum of its proper divisors (1234655526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154999994 is a wasteful number, since it uses less digits than its factorization.

1154999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637965.

The product of its digits is 4723920, while the sum is 60.

The square root of 1154999994 is about 33985.2908476594. The cubic root of 1154999994 is about 1049.2057467455.

The spelling of 1154999994 in words is "one billion, one hundred fifty-four million, nine hundred ninety-nine thousand, nine hundred ninety-four".