1613501066 has 4 divisors (see below), whose sum is σ = 2420251602. Its totient is φ = 806750532.

The previous prime is 1613501063. The next prime is 1613501107. The reversal of 1613501066 is 6601053161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1343589025 + 269912041 = 36655^2 + 16429^2 .

It is not an unprimeable number, because it can be changed into a prime (1613501063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403375265 + ... + 403375268.

Almost surely, 2^1613501066 is an apocalyptic number.

1613501066 is a deficient number, since it is larger than the sum of its proper divisors (806750536).

1613501066 is an equidigital number, since it uses as much as digits as its factorization.

1613501066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806750535.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1613501066 is about 40168.4088059261. The cubic root of 1613501066 is about 1172.8876648903.

The spelling of 1613501066 in words is "one billion, six hundred thirteen million, five hundred one thousand, sixty-six".