245642930 has 16 divisors (see below), whose sum is σ = 476169624. Its totient is φ = 90698880.

The previous prime is 245642927. The next prime is 245642933. The reversal of 245642930 is 39246542.

245642930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 15673²+1.

It is an interprime number because it is at equal distance from previous prime (245642927) and next prime (245642933).

It can be written as a sum of positive squares in 4 ways, for example, as 88416409 + 157226521 = 9403^2 + 12539^2 .

It is not an unprimeable number, because it can be changed into a prime (245642933) 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, 944651 + ... + 944910.

Almost surely, 2^245642930 is an apocalyptic number.

245642930 is a deficient number, since it is larger than the sum of its proper divisors (230526694).

245642930 is a wasteful number, since it uses less digits than its factorization.

245642930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889581.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 245642930 is about 15673.0000319020. Note that the first 4 decimals coincide. The cubic root of 245642930 is about 626.2793463830.

The spelling of 245642930 in words is "two hundred forty-five million, six hundred forty-two thousand, nine hundred thirty".