1655463421 has 8 divisors (see below), whose sum is σ = 1675343520. Its totient is φ = 1635701808.

The previous prime is 1655463389. The next prime is 1655463431. The reversal of 1655463421 is 1243645561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1655463421 - 2⁵ = 1655463389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655463431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351 + ... + 57556.

It is an arithmetic number, because the mean of its divisors is an integer number (209417940).

Almost surely, 2^1655463421 is an apocalyptic number.

It is an amenable number.

1655463421 is a deficient number, since it is larger than the sum of its proper divisors (19880099).

1655463421 is a wasteful number, since it uses less digits than its factorization.

1655463421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59243.

The product of its digits is 86400, while the sum is 37.

The square root of 1655463421 is about 40687.3865098264. The cubic root of 1655463421 is about 1182.9685433965.

The spelling of 1655463421 in words is "one billion, six hundred fifty-five million, four hundred sixty-three thousand, four hundred twenty-one".