1613131247 has 8 divisors (see below), whose sum is σ = 1985392416. Its totient is φ = 1276323552.

The previous prime is 1613131231. The next prime is 1613131253. The reversal of 1613131247 is 7421313161.

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

It is not a de Polignac number, because 1613131247 - 2⁴ = 1613131231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613131847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8863268 + ... + 8863449.

It is an arithmetic number, because the mean of its divisors is an integer number (248174052).

Almost surely, 2^1613131247 is an apocalyptic number.

1613131247 is a deficient number, since it is larger than the sum of its proper divisors (372261169).

1613131247 is a wasteful number, since it uses less digits than its factorization.

1613131247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17726737.

The product of its digits is 3024, while the sum is 29.

The square root of 1613131247 is about 40163.8051857640. The cubic root of 1613131247 is about 1172.7980483217.

The spelling of 1613131247 in words is "one billion, six hundred thirteen million, one hundred thirty-one thousand, two hundred forty-seven".