1530250403 has 24 divisors (see below), whose sum is σ = 1726490304. Its totient is φ = 1345053600.

The previous prime is 1530250399. The next prime is 1530250429. The reversal of 1530250403 is 3040520351.

It is not a de Polignac number, because 1530250403 - 2² = 1530250399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1530250483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4622948 + ... + 4623278.

It is an arithmetic number, because the mean of its divisors is an integer number (71937096).

Almost surely, 2^1530250403 is an apocalyptic number.

1530250403 is a deficient number, since it is larger than the sum of its proper divisors (196239901).

1530250403 is a wasteful number, since it uses less digits than its factorization.

1530250403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 1530250403 is about 39118.4151391643. The cubic root of 1530250403 is about 1152.3582114378.

Adding to 1530250403 its reverse (3040520351), we get a palindrome (4570770754).

The spelling of 1530250403 in words is "one billion, five hundred thirty million, two hundred fifty thousand, four hundred three".