1971960743 has 4 divisors (see below), whose sum is σ = 1979634000. Its totient is φ = 1964287488.

The previous prime is 1971960719. The next prime is 1971960751. The reversal of 1971960743 is 3470691791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1971960743 is a prime.

It is a super-2 number, since 2×1971960743² = 7777258343866224098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971960443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3836243 + ... + 3836756.

It is an arithmetic number, because the mean of its divisors is an integer number (494908500).

Almost surely, 2^1971960743 is an apocalyptic number.

1971960743 is a deficient number, since it is larger than the sum of its proper divisors (7673257).

1971960743 is an equidigital number, since it uses as much as digits as its factorization.

1971960743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673256.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 1971960743 is about 44406.7646085594. The cubic root of 1971960743 is about 1254.0054432702.

The spelling of 1971960743 in words is "one billion, nine hundred seventy-one million, nine hundred sixty thousand, seven hundred forty-three".