3516121397 has 4 divisors (see below), whose sum is σ = 3516240000. Its totient is φ = 3516002796.

The previous prime is 3516121393. The next prime is 3516121409. The reversal of 3516121397 is 7931216153.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7931216153 = 7 ⋅1133030879.

It is a cyclic number.

It is not a de Polignac number, because 3516121397 - 2² = 3516121393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3516121397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3516121391) 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, 28604 + ... + 88602.

It is an arithmetic number, because the mean of its divisors is an integer number (879060000).

Almost surely, 2^3516121397 is an apocalyptic number.

It is an amenable number.

3516121397 is a deficient number, since it is larger than the sum of its proper divisors (118603).

3516121397 is an equidigital number, since it uses as much as digits as its factorization.

3516121397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118602.

The product of its digits is 34020, while the sum is 38.

The square root of 3516121397 is about 59296.8919674548. The cubic root of 3516121397 is about 1520.6220614352.

The spelling of 3516121397 in words is "three billion, five hundred sixteen million, one hundred twenty-one thousand, three hundred ninety-seven".