245136999 has 16 divisors (see below), whose sum is σ = 330871680. Its totient is φ = 161421600.

The previous prime is 245136973. The next prime is 245137001. The reversal of 245136999 is 999631542.

It is not a de Polignac number, because 245136999 - 2⁸ = 245136743 is a prime.

It is a super-4 number, since 4×245136999⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245136919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186904 + ... + 188210.

It is an arithmetic number, because the mean of its divisors is an integer number (20679480).

Almost surely, 2^245136999 is an apocalyptic number.

245136999 is a deficient number, since it is larger than the sum of its proper divisors (85734681).

245136999 is a wasteful number, since it uses less digits than its factorization.

245136999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its digits is 524880, while the sum is 48.

The square root of 245136999 is about 15656.8515034154. The cubic root of 245136999 is about 625.8490851115.

The spelling of 245136999 in words is "two hundred forty-five million, one hundred thirty-six thousand, nine hundred ninety-nine".