2499978190 has 8 divisors (see below), whose sum is σ = 4499960760. Its totient is φ = 999991272.

The previous prime is 2499978139. The next prime is 2499978191. The reversal of 2499978190 is 918799942.

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

It is a super-2 number, since 2×2499978190² = 12499781900951352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499978191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124998900 + ... + 124998919.

It is an arithmetic number, because the mean of its divisors is an integer number (562495095).

Almost surely, 2^2499978190 is an apocalyptic number.

2499978190 is a deficient number, since it is larger than the sum of its proper divisors (1999982570).

2499978190 is a wasteful number, since it uses less digits than its factorization.

2499978190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249997826.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The square root of 2499978190 is about 49999.7818995243. The cubic root of 2499978190 is about 1357.2048615228.

The spelling of 2499978190 in words is "two billion, four hundred ninety-nine million, nine hundred seventy-eight thousand, one hundred ninety".