3742878978 has 24 divisors (see below), whose sum is σ = 8163282816. Its totient is φ = 1239363000.

The previous prime is 3742878959. The next prime is 3742879003. The reversal of 3742878978 is 8798782473.

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 11 ways as a sum of consecutive naturals, for example, 685818 + ... + 691253.

It is an arithmetic number, because the mean of its divisors is an integer number (340136784).

Almost surely, 2^3742878978 is an apocalyptic number.

3742878978 is an abundant number, since it is smaller than the sum of its proper divisors (4420403838).

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

3742878978 is a wasteful number, since it uses less digits than its factorization.

3742878978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377230 (or 1377227 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The square root of 3742878978 is about 61179.0730397249. The cubic root of 3742878978 is about 1552.6322222408.

The spelling of 3742878978 in words is "three billion, seven hundred forty-two million, eight hundred seventy-eight thousand, nine hundred seventy-eight".