2961991357 has 8 divisors (see below), whose sum is σ = 3299831640. Its totient is φ = 2639864640.

The previous prime is 2961991349. The next prime is 2961991363. The reversal of 2961991357 is 7531991692.

It is a happy number.

2961991357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 249039961 + 2712951396 = 15781^2 + 52086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2961991357 - 2³ = 2961991349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2961991157) 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, 3927994 + ... + 3928747.

It is an arithmetic number, because the mean of its divisors is an integer number (412478955).

Almost surely, 2^2961991357 is an apocalyptic number.

It is an amenable number.

2961991357 is a deficient number, since it is larger than the sum of its proper divisors (337840283).

2961991357 is a wasteful number, since it uses less digits than its factorization.

2961991357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856783.

The product of its digits is 918540, while the sum is 52.

The square root of 2961991357 is about 54424.1798927646. The cubic root of 2961991357 is about 1436.1327815717.

The spelling of 2961991357 in words is "two billion, nine hundred sixty-one million, nine hundred ninety-one thousand, three hundred fifty-seven".