245415138 has 16 divisors (see below), whose sum is σ = 494578656. Its totient is φ = 81180320.

The previous prime is 245415119. The next prime is 245415143. The reversal of 245415138 is 831514542.

245415138 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 245415099 and 245415108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155331 + ... + 156902.

It is an arithmetic number, because the mean of its divisors is an integer number (30911166).

Almost surely, 2^245415138 is an apocalyptic number.

245415138 is an abundant number, since it is smaller than the sum of its proper divisors (249163518).

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

245415138 is a wasteful number, since it uses less digits than its factorization.

245415138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312369.

The product of its digits is 19200, while the sum is 33.

The square root of 245415138 is about 15665.7313266888. The cubic root of 245415138 is about 626.0856973526.

The spelling of 245415138 in words is "two hundred forty-five million, four hundred fifteen thousand, one hundred thirty-eight".