1152378100 has 18 divisors (see below), whose sum is σ = 2500660694. Its totient is φ = 460951200.

The previous prime is 1152378089. The next prime is 1152378121. The reversal of 1152378100 is 18732511.

It can be written as a sum of positive squares in 3 ways, for example, as 15069924 + 1137308176 = 3882^2 + 33724^2 .

It is a super-2 number, since 2×1152378100² = 2655950570719220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5761791 + ... + 5761990.

Almost surely, 2^1152378100 is an apocalyptic number.

1152378100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152378100 is an abundant number, since it is smaller than the sum of its proper divisors (1348282594).

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

1152378100 is a wasteful number, since it uses less digits than its factorization.

1152378100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523795 (or 11523788 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1152378100 is about 33946.6949790403. The cubic root of 1152378100 is about 1048.4112329072.

The spelling of 1152378100 in words is "one billion, one hundred fifty-two million, three hundred seventy-eight thousand, one hundred".