245690152749 has 16 divisors (see below), whose sum is σ = 383142539200. Its totient is φ = 155172727728.

The previous prime is 245690152733. The next prime is 245690152819. The reversal of 245690152749 is 947251096542.

It is a happy number.

245690152749 is a `hidden beast` number, since 2 + 4 + 569 + 0 + 1 + 5 + 2 + 74 + 9 = 666.

245690152749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245690152749 - 2⁴ = 245690152733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245690152695 and 245690152704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245690152349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239463574 + ... + 239464599.

It is an arithmetic number, because the mean of its divisors is an integer number (23946408700).

Almost surely, 2^245690152749 is an apocalyptic number.

It is an amenable number.

245690152749 is a deficient number, since it is larger than the sum of its proper divisors (137452386451).

245690152749 is a wasteful number, since it uses less digits than its factorization.

245690152749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478928201 (or 478928195 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 245690152749 in words is "two hundred forty-five billion, six hundred ninety million, one hundred fifty-two thousand, seven hundred forty-nine".