1213152408 has 96 divisors (see below), whose sum is σ = 3544741200. Its totient is φ = 372605184.

The previous prime is 1213152401. The next prime is 1213152431. The reversal of 1213152408 is 8042513121.

1213152408 is a `hidden beast` number, since 1 + 2 + 131 + 524 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213152401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 848238 + ... + 849666.

Almost surely, 2^1213152408 is an apocalyptic number.

1213152408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213152408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772370600).

1213152408 is an abundant number, since it is smaller than the sum of its proper divisors (2331588792).

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

1213152408 is a wasteful number, since it uses less digits than its factorization.

1213152408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1213152408 is about 34830.3374660654. The cubic root of 1213152408 is about 1066.5268373129.

Adding to 1213152408 its reverse (8042513121), we get a palindrome (9255665529).

The spelling of 1213152408 in words is "one billion, two hundred thirteen million, one hundred fifty-two thousand, four hundred eight".