1153434540 has 48 divisors (see below), whose sum is σ = 3235311072. Its totient is φ = 307040256.

The previous prime is 1153434533. The next prime is 1153434553. The reversal of 1153434540 is 454343511.

It is a super-2 number, since 2×1153434540² = 2660822476130023200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1153434498 and 1153434507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17962 + ... + 51278.

It is an arithmetic number, because the mean of its divisors is an integer number (67402314).

Almost surely, 2^1153434540 is an apocalyptic number.

1153434540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153434540 is an abundant number, since it is smaller than the sum of its proper divisors (2081876532).

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

1153434540 is a wasteful number, since it uses less digits than its factorization.

1153434540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33906 (or 33904 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1153434540 is about 33962.2516921361. The cubic root of 1153434540 is about 1048.7315112594.

The spelling of 1153434540 in words is "one billion, one hundred fifty-three million, four hundred thirty-four thousand, five hundred forty".