1240337778 has 16 divisors (see below), whose sum is σ = 2482898016. Its totient is φ = 413075520.

The previous prime is 1240337773. The next prime is 1240337797. The reversal of 1240337778 is 8777330421.

1240337778 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1240337771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85303 + ... + 98778.

It is an arithmetic number, because the mean of its divisors is an integer number (155181126).

Almost surely, 2^1240337778 is an apocalyptic number.

1240337778 is an abundant number, since it is smaller than the sum of its proper divisors (1242560238).

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

1240337778 is a wasteful number, since it uses less digits than its factorization.

1240337778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185209.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 1240337778 is about 35218.4295220556. The cubic root of 1240337778 is about 1074.4346125163.

The spelling of 1240337778 in words is "one billion, two hundred forty million, three hundred thirty-seven thousand, seven hundred seventy-eight".