1970727690 has 32 divisors (see below), whose sum is σ = 4978681920. Its totient is φ = 497867904.

The previous prime is 1970727667. The next prime is 1970727701. The reversal of 1970727690 is 967270791.

It is a super-2 number, since 2×1970727690² = 7767535256265472200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1728139 + ... + 1729278.

It is an arithmetic number, because the mean of its divisors is an integer number (155583810).

Almost surely, 2^1970727690 is an apocalyptic number.

1970727690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1970727690 is an abundant number, since it is smaller than the sum of its proper divisors (3007954230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1970727690 is a wasteful number, since it uses less digits than its factorization.

1970727690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457446.

The product of its (nonzero) digits is 333396, while the sum is 48.

The square root of 1970727690 is about 44392.8788208199. The cubic root of 1970727690 is about 1253.7440152172.

The spelling of 1970727690 in words is "one billion, nine hundred seventy million, seven hundred twenty-seven thousand, six hundred ninety".