1970690947 has 4 divisors (see below), whose sum is σ = 1971937440. Its totient is φ = 1969444456.

The previous prime is 1970690941. The next prime is 1970690977. The reversal of 1970690947 is 7490960791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7490960791 = 4177 ⋅1793383.

It is a cyclic number.

It is not a de Polignac number, because 1970690947 - 2⁷ = 1970690819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1970690894 and 1970690903.

It is not an unprimeable number, because it can be changed into a prime (1970690941) 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, 620872 + ... + 624037.

It is an arithmetic number, because the mean of its divisors is an integer number (492984360).

Almost surely, 2^1970690947 is an apocalyptic number.

1970690947 is a deficient number, since it is larger than the sum of its proper divisors (1246493).

1970690947 is a wasteful number, since it uses less digits than its factorization.

1970690947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246492.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 1970690947 is about 44392.4649799941. The cubic root of 1970690947 is about 1253.7362234079.

The spelling of 1970690947 in words is "one billion, nine hundred seventy million, six hundred ninety thousand, nine hundred forty-seven".