1613135601 has 32 divisors (see below), whose sum is σ = 2979532800. Its totient is φ = 837991440.

The previous prime is 1613135599. The next prime is 1613135609. The reversal of 1613135601 is 1065313161.

1613135601 is a `hidden beast` number, since 16 + 13 + 1 + 35 + 601 = 666.

1613135601 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1613135601 - 2¹ = 1613135599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1613135609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385881 + ... + 390038.

It is an arithmetic number, because the mean of its divisors is an integer number (93110400).

Almost surely, 2^1613135601 is an apocalyptic number.

1613135601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1613135601 is a deficient number, since it is larger than the sum of its proper divisors (1366397199).

1613135601 is a wasteful number, since it uses less digits than its factorization.

1613135601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775946 (or 775940 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1613135601 is about 40163.8593887589. The cubic root of 1613135601 is about 1172.7991034865.

Adding to 1613135601 its reverse (1065313161), we get a palindrome (2678448762).

The spelling of 1613135601 in words is "one billion, six hundred thirteen million, one hundred thirty-five thousand, six hundred one".