1670740403 has 2 divisors, whose sum is σ = 1670740404. Its totient is φ = 1670740402.

The previous prime is 1670740387. The next prime is 1670740441. The reversal of 1670740403 is 3040470761.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1670740403 - 2⁴ = 1670740387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1670740403.

It is not a weakly prime, because it can be changed into another prime (1670740483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835370201 + 835370202.

It is an arithmetic number, because the mean of its divisors is an integer number (835370202).

Almost surely, 2^1670740403 is an apocalyptic number.

1670740403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670740403 is an equidigital number, since it uses as much as digits as its factorization.

1670740403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 1670740403 is about 40874.6914728417. The cubic root of 1670740403 is about 1186.5963052254.

The spelling of 1670740403 in words is "one billion, six hundred seventy million, seven hundred forty thousand, four hundred three".