1670143449 has 32 divisors (see below), whose sum is σ = 2462390784. Its totient is φ = 1000488960.

The previous prime is 1670143403. The next prime is 1670143471. The reversal of 1670143449 is 9443410761.

It is not a de Polignac number, because 1670143449 - 2²¹ = 1668046297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1670133449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351409 + ... + 356129.

It is an arithmetic number, because the mean of its divisors is an integer number (76949712).

Almost surely, 2^1670143449 is an apocalyptic number.

It is an amenable number.

1670143449 is a deficient number, since it is larger than the sum of its proper divisors (792247335).

1670143449 is a wasteful number, since it uses less digits than its factorization.

1670143449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1670143449 is about 40867.3885757336. The cubic root of 1670143449 is about 1186.4549651366.

The spelling of 1670143449 in words is "one billion, six hundred seventy million, one hundred forty-three thousand, four hundred forty-nine".