1661752230 has 16 divisors (see below), whose sum is σ = 3988205424. Its totient is φ = 443133920.

The previous prime is 1661752219. The next prime is 1661752249. The reversal of 1661752230 is 322571661.

It is a super-2 number, since 2×1661752230² = 5522840947819945800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1661752191 and 1661752200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27695841 + ... + 27695900.

It is an arithmetic number, because the mean of its divisors is an integer number (249262839).

Almost surely, 2^1661752230 is an apocalyptic number.

1661752230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661752230 is an abundant number, since it is smaller than the sum of its proper divisors (2326453194).

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

1661752230 is a wasteful number, since it uses less digits than its factorization.

1661752230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55391751.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1661752230 is about 40764.5953003338. The cubic root of 1661752230 is about 1184.4646124253.

The spelling of 1661752230 in words is "one billion, six hundred sixty-one million, seven hundred fifty-two thousand, two hundred thirty".