2078494090 has 16 divisors (see below), whose sum is σ = 3870299880. Its totient is φ = 802728640.

The previous prime is 2078494081. The next prime is 2078494091. The reversal of 2078494090 is 904948702.

It can be written as a sum of positive squares in 4 ways, for example, as 1300251481 + 778242609 = 36059^2 + 27897^2 .

It is not an unprimeable number, because it can be changed into a prime (2078494091) 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, 3583321 + ... + 3583900.

Almost surely, 2^2078494090 is an apocalyptic number.

2078494090 is a deficient number, since it is larger than the sum of its proper divisors (1791805790).

2078494090 is a wasteful number, since it uses less digits than its factorization.

2078494090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167257.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2078494090 is about 45590.5043841368. The cubic root of 2078494090 is about 1276.1927252356.

The spelling of 2078494090 in words is "two billion, seventy-eight million, four hundred ninety-four thousand, ninety".