1670740739 has 8 divisors (see below), whose sum is σ = 1771253568. Its totient is φ = 1570476160.

The previous prime is 1670740727. The next prime is 1670740763. The reversal of 1670740739 is 9370470761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1670740739 - 2⁸ = 1670740483 is a prime.

It is a super-2 number, since 2×1670740739² = 5582749233908532242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1670740739.

It is not an unprimeable number, because it can be changed into a prime (1670740039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48107 + ... + 75204.

It is an arithmetic number, because the mean of its divisors is an integer number (221406696).

Almost surely, 2^1670740739 is an apocalyptic number.

1670740739 is a deficient number, since it is larger than the sum of its proper divisors (100512829).

1670740739 is a wasteful number, since it uses less digits than its factorization.

1670740739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124125.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 1670740739 is about 40874.6955829643. The cubic root of 1670740739 is about 1186.5963847703.

The spelling of 1670740739 in words is "one billion, six hundred seventy million, seven hundred forty thousand, seven hundred thirty-nine".