3249136785 has 16 divisors (see below), whose sum is σ = 5286732480. Its totient is φ = 1703501760.

The previous prime is 3249136783. The next prime is 3249136789. The reversal of 3249136785 is 5876319423.

It is not a de Polignac number, because 3249136785 - 2¹ = 3249136783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3249136783) 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, 1834786 + ... + 1836555.

It is an arithmetic number, because the mean of its divisors is an integer number (330420780).

Almost surely, 2^3249136785 is an apocalyptic number.

It is an amenable number.

3249136785 is a deficient number, since it is larger than the sum of its proper divisors (2037595695).

3249136785 is a wasteful number, since it uses less digits than its factorization.

3249136785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671408.

The product of its digits is 1088640, while the sum is 48.

The square root of 3249136785 is about 57001.1998557925. The cubic root of 3249136785 is about 1481.1168804865.

The spelling of 3249136785 in words is "three billion, two hundred forty-nine million, one hundred thirty-six thousand, seven hundred eighty-five".