1349985970 has 32 divisors (see below), whose sum is σ = 2465291520. Its totient is φ = 532172160.

The previous prime is 1349985947. The next prime is 1349985971. The reversal of 1349985970 is 795899431.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1349985971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544654 + ... + 547126.

It is an arithmetic number, because the mean of its divisors is an integer number (77040360).

Almost surely, 2^1349985970 is an apocalyptic number.

1349985970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1349985970 is a deficient number, since it is larger than the sum of its proper divisors (1115305550).

1349985970 is a wasteful number, since it uses less digits than its factorization.

1349985970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 1349985970 is about 36742.1552171344. The cubic root of 1349985970 is about 1105.2056209150.

The spelling of 1349985970 in words is "one billion, three hundred forty-nine million, nine hundred eighty-five thousand, nine hundred seventy".