1530212661 has 32 divisors (see below), whose sum is σ = 2342442240. Its totient is φ = 986731200.

The previous prime is 1530212657. The next prime is 1530212681. The reversal of 1530212661 is 1662120351.

1530212661 is a `hidden beast` number, since 1 + 530 + 2 + 126 + 6 + 1 = 666.

It is not a de Polignac number, because 1530212661 - 2² = 1530212657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530212681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94071 + ... + 109131.

It is an arithmetic number, because the mean of its divisors is an integer number (73201320).

Almost surely, 2^1530212661 is an apocalyptic number.

It is an amenable number.

1530212661 is a deficient number, since it is larger than the sum of its proper divisors (812229579).

1530212661 is a wasteful number, since it uses less digits than its factorization.

1530212661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15194 (or 15188 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1530212661 is about 39117.9327291205. The cubic root of 1530212661 is about 1152.3487374630.

The spelling of 1530212661 in words is "one billion, five hundred thirty million, two hundred twelve thousand, six hundred sixty-one".