1528991046 has 32 divisors (see below), whose sum is σ = 3706646400. Its totient is φ = 463330440.

The previous prime is 1528991029. The next prime is 1528991053. The reversal of 1528991046 is 6401998251.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1528990992 and 1528991010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1286436 + ... + 1287623.

It is an arithmetic number, because the mean of its divisors is an integer number (115832700).

Almost surely, 2^1528991046 is an apocalyptic number.

1528991046 is an abundant number, since it is smaller than the sum of its proper divisors (2177655354).

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

1528991046 is a wasteful number, since it uses less digits than its factorization.

1528991046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574081 (or 2574075 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1528991046 is about 39102.3150977023. The cubic root of 1528991046 is about 1152.0420042193.

The spelling of 1528991046 in words is "one billion, five hundred twenty-eight million, nine hundred ninety-one thousand, forty-six".