1355169492 has 18 divisors (see below), whose sum is σ = 3425567418. Its totient is φ = 451723152.

The previous prime is 1355169479. The next prime is 1355169493. The reversal of 1355169492 is 2949615531.

1355169492 is a `hidden beast` number, since 1 + 3 + 551 + 6 + 9 + 4 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 953327376 + 401842116 = 30876^2 + 20046^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355169493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18821763 + ... + 18821834.

It is an arithmetic number, because the mean of its divisors is an integer number (190309301).

Almost surely, 2^1355169492 is an apocalyptic number.

1355169492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1355169492 is an abundant number, since it is smaller than the sum of its proper divisors (2070397926).

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

1355169492 is a wasteful number, since it uses less digits than its factorization.

1355169492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37643607 (or 37643602 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 1355169492 is about 36812.6268011399. The cubic root of 1355169492 is about 1106.6183617486.

The spelling of 1355169492 in words is "one billion, three hundred fifty-five million, one hundred sixty-nine thousand, four hundred ninety-two".