1690149255 has 8 divisors (see below), whose sum is σ = 2704238832. Its totient is φ = 901412928.

The previous prime is 1690149239. The next prime is 1690149257. The reversal of 1690149255 is 5529410961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1690149255 - 2⁴ = 1690149239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690149257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56338294 + ... + 56338323.

It is an arithmetic number, because the mean of its divisors is an integer number (338029854).

Almost surely, 2^1690149255 is an apocalyptic number.

1690149255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1690149255 is a deficient number, since it is larger than the sum of its proper divisors (1014089577).

1690149255 is a wasteful number, since it uses less digits than its factorization.

1690149255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112676625.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 1690149255 is about 41111.4248719258. The cubic root of 1690149255 is about 1191.1734899168.

The spelling of 1690149255 in words is "one billion, six hundred ninety million, one hundred forty-nine thousand, two hundred fifty-five".