7161749785 has 16 divisors (see below), whose sum is σ = 9014178816. Its totient is φ = 5455937088.

The previous prime is 7161749761. The next prime is 7161749809. The reversal of 7161749785 is 5879471617.

It is an interprime number because it is at equal distance from previous prime (7161749761) and next prime (7161749809).

It is a cyclic number.

It is not a de Polignac number, because 7161749785 - 2¹³ = 7161741593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403137 + ... + 420526.

It is an arithmetic number, because the mean of its divisors is an integer number (563386176).

Almost surely, 2^7161749785 is an apocalyptic number.

It is an amenable number.

7161749785 is a deficient number, since it is larger than the sum of its proper divisors (1852429031).

7161749785 is a wasteful number, since it uses less digits than its factorization.

7161749785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823752.

The product of its digits is 2963520, while the sum is 55.

The square root of 7161749785 is about 84627.1220413409. The cubic root of 7161749785 is about 1927.5532351559.

The spelling of 7161749785 in words is "seven billion, one hundred sixty-one million, seven hundred forty-nine thousand, seven hundred eighty-five".