3491197605 has 160 divisors (see below), whose sum is σ = 7655129856. Its totient is φ = 1485858816.

The previous prime is 3491197603. The next prime is 3491197607. The reversal of 3491197605 is 5067911943.

3491197605 is a `hidden beast` number, since 34 + 9 + 1 + 1 + 9 + 7 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (3491197603) and next prime (3491197607).

It is not a de Polignac number, because 3491197605 - 2¹ = 3491197603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491197603) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5156527 + ... + 5157203.

Almost surely, 2^3491197605 is an apocalyptic number.

3491197605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3491197605 is an abundant number, since it is smaller than the sum of its proper divisors (4163932251).

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

3491197605 is a wasteful number, since it uses less digits than its factorization.

3491197605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 3491197605 is about 59086.3571816710. The cubic root of 3491197605 is about 1517.0205957139.

The spelling of 3491197605 in words is "three billion, four hundred ninety-one million, one hundred ninety-seven thousand, six hundred five".