1213752416 has 12 divisors (see below), whose sum is σ = 2389575132. Its totient is φ = 606876192.

The previous prime is 1213752413. The next prime is 1213752439. The reversal of 1213752416 is 6142573121.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 37929763 = 1213752416 / (1 + 2 + 1 + 3 + 7 + 5 + 2 + 4 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213752413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18964850 + ... + 18964913.

It is an arithmetic number, because the mean of its divisors is an integer number (199131261).

Almost surely, 2^1213752416 is an apocalyptic number.

1213752416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1213752416 is a deficient number, since it is larger than the sum of its proper divisors (1175822716).

1213752416 is an equidigital number, since it uses as much as digits as its factorization.

1213752416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37929773 (or 37929765 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1213752416 is about 34838.9496971421. The cubic root of 1213752416 is about 1066.7026380230.

The spelling of 1213752416 in words is "one billion, two hundred thirteen million, seven hundred fifty-two thousand, four hundred sixteen".