1374770816 has 64 divisors (see below), whose sum is σ = 2866418280. Its totient is φ = 656068608.

The previous prime is 1374770797. The next prime is 1374770819. The reversal of 1374770816 is 6180774731.

It can be written as a sum of positive squares in 4 ways, for example, as 1231729216 + 143041600 = 35096^2 + 11960^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1374770819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248270 + ... + 253746.

Almost surely, 2^1374770816 is an apocalyptic number.

1374770816 is a gapful number since it is divisible by the number (16) 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 1374770816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433209140).

1374770816 is an abundant number, since it is smaller than the sum of its proper divisors (1491647464).

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

1374770816 is an equidigital number, since it uses as much as digits as its factorization.

1374770816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 1374770816 is about 37077.9019902691. The cubic root of 1374770816 is about 1111.9282599544.

The spelling of 1374770816 in words is "one billion, three hundred seventy-four million, seven hundred seventy thousand, eight hundred sixteen".