1607746491 has 48 divisors (see below), whose sum is σ = 2653953120. Its totient is φ = 929111040.

The previous prime is 1607746487. The next prime is 1607746493. The reversal of 1607746491 is 1946477061.

It is not a de Polignac number, because 1607746491 - 2² = 1607746487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1607746493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1708081 + ... + 1709021.

It is an arithmetic number, because the mean of its divisors is an integer number (55290690).

Almost surely, 2^1607746491 is an apocalyptic number.

1607746491 is a deficient number, since it is larger than the sum of its proper divisors (1046206629).

1607746491 is a wasteful number, since it uses less digits than its factorization.

1607746491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1607746491 is about 40096.7142170029. The cubic root of 1607746491 is about 1171.4916302794.

The spelling of 1607746491 in words is "one billion, six hundred seven million, seven hundred forty-six thousand, four hundred ninety-one".