906149778 has 16 divisors (see below), whose sum is σ = 1870761216. Its totient is φ = 292306320.

The previous prime is 906149719. The next prime is 906149779. The reversal of 906149778 is 877941609.

906149778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×906149778² = 1642214840338898568, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 906149778.

It is not an unprimeable number, because it can be changed into a prime (906149779) 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, 2435701 + ... + 2436072.

It is an arithmetic number, because the mean of its divisors is an integer number (116922576).

Almost surely, 2^906149778 is an apocalyptic number.

906149778 is an abundant number, since it is smaller than the sum of its proper divisors (964611438).

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

906149778 is a wasteful number, since it uses less digits than its factorization.

906149778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871809.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 906149778 is about 30102.3218041400. The cubic root of 906149778 is about 967.6834855546.

The spelling of 906149778 in words is "nine hundred six million, one hundred forty-nine thousand, seven hundred seventy-eight".