1529897812 has 12 divisors (see below), whose sum is σ = 2721212116. Its totient is φ = 752408640.

The previous prime is 1529897791. The next prime is 1529897819. The reversal of 1529897812 is 2187989251.

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 1505750416 = 4914^2 + 38804^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1529897812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1529897819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134793 + ... + 3135280.

Almost surely, 2^1529897812 is an apocalyptic number.

It is an amenable number.

1529897812 is a deficient number, since it is larger than the sum of its proper divisors (1191314304).

1529897812 is a wasteful number, since it uses less digits than its factorization.

1529897812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270138 (or 6270136 counting only the distinct ones).

The product of its digits is 725760, while the sum is 52.

The square root of 1529897812 is about 39113.9081657663. The cubic root of 1529897812 is about 1152.2696981801.

It can be divided in two parts, 152989 and 7812, that added together give a square (160801 = 401²).

The spelling of 1529897812 in words is "one billion, five hundred twenty-nine million, eight hundred ninety-seven thousand, eight hundred twelve".