1213837488 has 180 divisors, whose sum is σ = 3651089728. Its totient is φ = 390510720.

The previous prime is 1213837403. The next prime is 1213837511. The reversal of 1213837488 is 8847383121.

1213837488 is a `hidden beast` number, since 1 + 2 + 138 + 37 + 488 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3254070 + ... + 3254442.

Almost surely, 2^1213837488 is an apocalyptic number.

1213837488 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 1213837488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1825544864).

1213837488 is an abundant number, since it is smaller than the sum of its proper divisors (2437252240).

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

1213837488 is an frugal number, since it uses more digits than its factorization.

1213837488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 409 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1213837488 is about 34840.1706080783. The cubic root of 1213837488 is about 1066.7275591974.

The spelling of 1213837488 in words is "one billion, two hundred thirteen million, eight hundred thirty-seven thousand, four hundred eighty-eight".