1259967971 has 16 divisors (see below), whose sum is σ = 1353016224. Its totient is φ = 1169086464.

The previous prime is 1259967953. The next prime is 1259968013. The reversal of 1259967971 is 1797699521.

It is not a de Polignac number, because 1259967971 - 2¹⁰ = 1259966947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259967941) 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, 1321631 + ... + 1322583.

It is an arithmetic number, because the mean of its divisors is an integer number (84563514).

Almost surely, 2^1259967971 is an apocalyptic number.

1259967971 is a deficient number, since it is larger than the sum of its proper divisors (93048253).

1259967971 is an equidigital number, since it uses as much as digits as its factorization.

1259967971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990.

The product of its digits is 2143260, while the sum is 56.

The square root of 1259967971 is about 35496.0275383035. The cubic root of 1259967971 is about 1080.0731463376.

The spelling of 1259967971 in words is "one billion, two hundred fifty-nine million, nine hundred sixty-seven thousand, nine hundred seventy-one".