1606197888 has 48 divisors (see below), whose sum is σ = 4622005050. Its totient is φ = 535398912.

The previous prime is 1606197869. The next prime is 1606197911. The reversal of 1606197888 is 8887916061.

1606197888 is a `hidden beast` number, since 16 + 0 + 619 + 7 + 8 + 8 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1216056384 + 390141504 = 34872^2 + 19752^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 695983 + ... + 698286.

Almost surely, 2^1606197888 is an apocalyptic number.

1606197888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1606197888 is an abundant number, since it is smaller than the sum of its proper divisors (3015807162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606197888 is a wasteful number, since it uses less digits than its factorization.

1606197888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394289 (or 1394274 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1606197888 is about 40077.3987179807. The cubic root of 1606197888 is about 1171.1153772954.

The spelling of 1606197888 in words is "one billion, six hundred six million, one hundred ninety-seven thousand, eight hundred eighty-eight".