1673339878 has 16 divisors (see below), whose sum is σ = 2894902560. Its totient is φ = 710565696.

The previous prime is 1673339809. The next prime is 1673339891. The reversal of 1673339878 is 8789333761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546751 + ... + 549802.

It is an arithmetic number, because the mean of its divisors is an integer number (180931410).

Almost surely, 2^1673339878 is an apocalyptic number.

1673339878 is a deficient number, since it is larger than the sum of its proper divisors (1221562682).

1673339878 is a wasteful number, since it uses less digits than its factorization.

1673339878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096671.

The product of its digits is 4572288, while the sum is 55.

The square root of 1673339878 is about 40906.4772132727. The cubic root of 1673339878 is about 1187.2113876336.

It can be divided in two parts, 1673 and 339878, that added together give a triangular number (341551 = T₈₂₆).

The spelling of 1673339878 in words is "one billion, six hundred seventy-three million, three hundred thirty-nine thousand, eight hundred seventy-eight".