3161540785 has 16 divisors (see below), whose sum is σ = 4263323904. Its totient is φ = 2233167552.

The previous prime is 3161540741. The next prime is 3161540803. The reversal of 3161540785 is 5870451613.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3161540785 - 2¹³ = 3161532593 is a prime.

It is a super-3 number, since 3×3161540785³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055877 + ... + 1058866.

It is an arithmetic number, because the mean of its divisors is an integer number (266457744).

Almost surely, 2^3161540785 is an apocalyptic number.

It is an amenable number.

3161540785 is a deficient number, since it is larger than the sum of its proper divisors (1101783119).

3161540785 is a wasteful number, since it uses less digits than its factorization.

3161540785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114784.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 3161540785 is about 56227.5802876133. The cubic root of 3161540785 is about 1467.6852497137.

The spelling of 3161540785 in words is "three billion, one hundred sixty-one million, five hundred forty thousand, seven hundred eighty-five".