1607228861 has 12 divisors (see below), whose sum is σ = 1870338492. Its totient is φ = 1377105408.

The previous prime is 1607228837. The next prime is 1607228881. The reversal of 1607228861 is 1688227061.

It can be written as a sum of positive squares in 2 ways, for example, as 1582527961 + 24700900 = 39781^2 + 4970^2 .

It is not a de Polignac number, because 1607228861 - 2⁶ = 1607228797 is a prime.

It is a super-2 number, since 2×1607228861² = 5166369223262714642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1607228801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184541 + ... + 193053.

It is an arithmetic number, because the mean of its divisors is an integer number (155861541).

Almost surely, 2^1607228861 is an apocalyptic number.

It is an amenable number.

1607228861 is a deficient number, since it is larger than the sum of its proper divisors (263109631).

1607228861 is an equidigital number, since it uses as much as digits as its factorization.

1607228861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12380 (or 12373 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 1607228861 is about 40090.2589290715. The cubic root of 1607228861 is about 1171.3658923171.

The spelling of 1607228861 in words is "one billion, six hundred seven million, two hundred twenty-eight thousand, eight hundred sixty-one".