1965972097 has 8 divisors (see below), whose sum is σ = 2037980736. Its totient is φ = 1894956912.

The previous prime is 1965972061. The next prime is 1965972101. The reversal of 1965972097 is 7902795691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1965972097 - 2²³ = 1957583489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1965972797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244333 + ... + 252250.

It is an arithmetic number, because the mean of its divisors is an integer number (254747592).

Almost surely, 2^1965972097 is an apocalyptic number.

It is an amenable number.

1965972097 is a deficient number, since it is larger than the sum of its proper divisors (72008639).

1965972097 is a wasteful number, since it uses less digits than its factorization.

1965972097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496727.

The product of its (nonzero) digits is 2143260, while the sum is 55.

The square root of 1965972097 is about 44339.2839026523. The cubic root of 1965972097 is about 1252.7347266795.

The spelling of 1965972097 in words is "one billion, nine hundred sixty-five million, nine hundred seventy-two thousand, ninety-seven".