1672969405 has 16 divisors (see below), whose sum is σ = 2194228224. Its totient is φ = 1219011840.

The previous prime is 1672969391. The next prime is 1672969409. The reversal of 1672969405 is 5049692761.

It is a happy number.

It is not a de Polignac number, because 1672969405 - 2⁹ = 1672968893 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 (1672969409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314817 + ... + 320086.

It is an arithmetic number, because the mean of its divisors is an integer number (137139264).

Almost surely, 2^1672969405 is an apocalyptic number.

It is an amenable number.

1672969405 is a deficient number, since it is larger than the sum of its proper divisors (521258819).

1672969405 is a wasteful number, since it uses less digits than its factorization.

1672969405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634956.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1672969405 is about 40901.9486699595. The cubic root of 1672969405 is about 1187.1237660187.

The spelling of 1672969405 in words is "one billion, six hundred seventy-two million, nine hundred sixty-nine thousand, four hundred five".