1671949455 has 64 divisors (see below), whose sum is σ = 3020322816. Its totient is φ = 782720000.

The previous prime is 1671949453. The next prime is 1671949483. The reversal of 1671949455 is 5549491761.

It is a happy number.

It is not a de Polignac number, because 1671949455 - 2¹ = 1671949453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1671949398 and 1671949407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671949453) 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 63 ways as a sum of consecutive naturals, for example, 682042 + ... + 684488.

It is an arithmetic number, because the mean of its divisors is an integer number (47192544).

Almost surely, 2^1671949455 is an apocalyptic number.

1671949455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1671949455 is a deficient number, since it is larger than the sum of its proper divisors (1348373361).

1671949455 is a wasteful number, since it uses less digits than its factorization.

1671949455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608.

The product of its digits is 1360800, while the sum is 51.

The square root of 1671949455 is about 40889.4785366603. The cubic root of 1671949455 is about 1186.8824679158.

The spelling of 1671949455 in words is "one billion, six hundred seventy-one million, nine hundred forty-nine thousand, four hundred fifty-five".