1670399054 has 4 divisors (see below), whose sum is σ = 2505598584. Its totient is φ = 835199526.

The previous prime is 1670399053. The next prime is 1670399063. The reversal of 1670399054 is 4509930761.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1670398996 and 1670399014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670399053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417599762 + ... + 417599765.

It is an arithmetic number, because the mean of its divisors is an integer number (626399646).

Almost surely, 2^1670399054 is an apocalyptic number.

1670399054 is a deficient number, since it is larger than the sum of its proper divisors (835199530).

1670399054 is an equidigital number, since it uses as much as digits as its factorization.

1670399054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835199529.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 1670399054 is about 40870.5157050899. The cubic root of 1670399054 is about 1186.5154885509.

The spelling of 1670399054 in words is "one billion, six hundred seventy million, three hundred ninety-nine thousand, fifty-four".