1154998540 has 12 divisors (see below), whose sum is σ = 2425496976. Its totient is φ = 461999408.

The previous prime is 1154998531. The next prime is 1154998591. The reversal of 1154998540 is 458994511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28874944 + ... + 28874983.

It is an arithmetic number, because the mean of its divisors is an integer number (202124748).

Almost surely, 2^1154998540 is an apocalyptic number.

1154998540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154998540 is an abundant number, since it is smaller than the sum of its proper divisors (1270498436).

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

1154998540 is a wasteful number, since it uses less digits than its factorization.

1154998540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57749936 (or 57749934 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 1154998540 is about 33985.2694560452. The cubic root of 1154998540 is about 1049.2053064725.

The spelling of 1154998540 in words is "one billion, one hundred fifty-four million, nine hundred ninety-eight thousand, five hundred forty".