1156215450 has 48 divisors (see below), whose sum is σ = 3087989856. Its totient is φ = 284606400.

The previous prime is 1156215443. The next prime is 1156215491. The reversal of 1156215450 is 545126511.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294516 + ... + 298415.

It is an arithmetic number, because the mean of its divisors is an integer number (64333122).

Almost surely, 2^1156215450 is an apocalyptic number.

1156215450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1156215450 is an abundant number, since it is smaller than the sum of its proper divisors (1931774406).

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

1156215450 is a wasteful number, since it uses less digits than its factorization.

1156215450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592959 (or 592954 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1156215450 is about 34003.1682347395. The cubic root of 1156215450 is about 1049.5736591120.

The spelling of 1156215450 in words is "one billion, one hundred fifty-six million, two hundred fifteen thousand, four hundred fifty".