2278478253 has 8 divisors (see below), whose sum is σ = 3080759616. Its totient is φ = 1497591200.

The previous prime is 2278478249. The next prime is 2278478273. The reversal of 2278478253 is 3528748722.

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

It is a cyclic number.

It is not a de Polignac number, because 2278478253 - 2² = 2278478249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278478273) 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, 5348328 + ... + 5348753.

It is an arithmetic number, because the mean of its divisors is an integer number (385094952).

Almost surely, 2^2278478253 is an apocalyptic number.

It is an amenable number.

2278478253 is a deficient number, since it is larger than the sum of its proper divisors (802281363).

2278478253 is a wasteful number, since it uses less digits than its factorization.

2278478253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10697155.

The product of its digits is 1505280, while the sum is 48.

The square root of 2278478253 is about 47733.4081435634. The cubic root of 2278478253 is about 1315.8759897450.

The spelling of 2278478253 in words is "two billion, two hundred seventy-eight million, four hundred seventy-eight thousand, two hundred fifty-three".