1613660811 has 16 divisors (see below), whose sum is σ = 2459685888. Its totient is φ = 921801600.

The previous prime is 1613660809. The next prime is 1613660819. The reversal of 1613660811 is 1180663161.

It is not a de Polignac number, because 1613660811 - 2¹ = 1613660809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1613660819) 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, 68766 + ... + 89196.

It is an arithmetic number, because the mean of its divisors is an integer number (153730368).

Almost surely, 2^1613660811 is an apocalyptic number.

1613660811 is a deficient number, since it is larger than the sum of its proper divisors (846025077).

1613660811 is a wasteful number, since it uses less digits than its factorization.

1613660811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24202.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1613660811 is about 40170.3971974388. The cubic root of 1613660811 is about 1172.9263709399.

The spelling of 1613660811 in words is "one billion, six hundred thirteen million, six hundred sixty thousand, eight hundred eleven".