2278153974 has 8 divisors (see below), whose sum is σ = 4556307960. Its totient is φ = 759384656.

The previous prime is 2278153909. The next prime is 2278153981. The reversal of 2278153974 is 4793518722.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2278153974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189846159 + ... + 189846170.

It is an arithmetic number, because the mean of its divisors is an integer number (569538495).

Almost surely, 2^2278153974 is an apocalyptic number.

2278153974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2278153974 is a wasteful number, since it uses less digits than its factorization.

2278153974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379692334.

The product of its digits is 846720, while the sum is 48.

The square root of 2278153974 is about 47730.0112507843. The cubic root of 2278153974 is about 1315.8135604760.

The spelling of 2278153974 in words is "two billion, two hundred seventy-eight million, one hundred fifty-three thousand, nine hundred seventy-four".