1690157328 has 20 divisors (see below), whose sum is σ = 4366239888. Its totient is φ = 563385760.

The previous prime is 1690157321. The next prime is 1690157377. The reversal of 1690157328 is 8237510961.

It is a self number, because there is not a number n which added to its sum of digits gives 1690157328.

It is not an unprimeable number, because it can be changed into a prime (1690157321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17605758 + ... + 17605853.

Almost surely, 2^1690157328 is an apocalyptic number.

It is an amenable number.

1690157328 is an abundant number, since it is smaller than the sum of its proper divisors (2676082560).

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

1690157328 is a wasteful number, since it uses less digits than its factorization.

1690157328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35211622 (or 35211616 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1690157328 is about 41111.5230561944. The cubic root of 1690157328 is about 1191.1753864610.

The spelling of 1690157328 in words is "one billion, six hundred ninety million, one hundred fifty-seven thousand, three hundred twenty-eight".