3491551120 has 80 divisors (see below), whose sum is σ = 8607627648. Its totient is φ = 1312593920.

The previous prime is 3491551081. The next prime is 3491551127. The reversal of 3491551120 is 211551943.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (3491551127) 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, 1286565 + ... + 1289275.

Almost surely, 2^3491551120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3491551120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4303813824).

3491551120 is an abundant number, since it is smaller than the sum of its proper divisors (5116076528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3491551120 is a wasteful number, since it uses less digits than its factorization.

3491551120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 3491551120 is about 59089.3486171577. The cubic root of 3491551120 is about 1517.0717979561.

The spelling of 3491551120 in words is "three billion, four hundred ninety-one million, five hundred fifty-one thousand, one hundred twenty".