1530137772 has 36 divisors (see below), whose sum is σ = 3940831440. Its totient is φ = 500421792.

The previous prime is 1530137731. The next prime is 1530137789. The reversal of 1530137772 is 2777310351.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1530137772² = 4682643202602247968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399072 + ... + 402887.

It is an arithmetic number, because the mean of its divisors is an integer number (109467540).

Almost surely, 2^1530137772 is an apocalyptic number.

1530137772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1530137772 is an abundant number, since it is smaller than the sum of its proper divisors (2410693668).

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

1530137772 is a wasteful number, since it uses less digits than its factorization.

1530137772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802022 (or 802017 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

The square root of 1530137772 is about 39116.9754965795. The cubic root of 1530137772 is about 1152.3299384088.

The spelling of 1530137772 in words is "one billion, five hundred thirty million, one hundred thirty-seven thousand, seven hundred seventy-two".