1655970481 has 4 divisors (see below), whose sum is σ = 1806513264. Its totient is φ = 1505427700.

The previous prime is 1655970467. The next prime is 1655970487. The reversal of 1655970481 is 1840795561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1655970481 - 2⁹ = 1655969969 is a prime.

It is a super-2 number, since 2×1655970481² = 5484476467886742722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655970487) 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, 75271375 + ... + 75271396.

It is an arithmetic number, because the mean of its divisors is an integer number (451628316).

Almost surely, 2^1655970481 is an apocalyptic number.

1655970481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1655970481 is a deficient number, since it is larger than the sum of its proper divisors (150542783).

1655970481 is a wasteful number, since it uses less digits than its factorization.

1655970481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150542782.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 1655970481 is about 40693.6172022100. The cubic root of 1655970481 is about 1183.0893101438.

The spelling of 1655970481 in words is "one billion, six hundred fifty-five million, nine hundred seventy thousand, four hundred eighty-one".