1679139141 has 4 divisors (see below), whose sum is σ = 2238852192. Its totient is φ = 1119426092.

The previous prime is 1679139139. The next prime is 1679139169. The reversal of 1679139141 is 1419319761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1679139141 - 2¹ = 1679139139 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1679139093 and 1679139102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679139101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279856521 + ... + 279856526.

It is an arithmetic number, because the mean of its divisors is an integer number (559713048).

Almost surely, 2^1679139141 is an apocalyptic number.

It is an amenable number.

1679139141 is a deficient number, since it is larger than the sum of its proper divisors (559713051).

1679139141 is an equidigital number, since it uses as much as digits as its factorization.

1679139141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559713050.

The product of its digits is 40824, while the sum is 42.

The square root of 1679139141 is about 40977.3003137103. The cubic root of 1679139141 is about 1188.5813051182.

The spelling of 1679139141 in words is "one billion, six hundred seventy-nine million, one hundred thirty-nine thousand, one hundred forty-one".