1651968334 has 4 divisors (see below), whose sum is σ = 2477952504. Its totient is φ = 825984166.

The previous prime is 1651968313. The next prime is 1651968337. The reversal of 1651968334 is 4338691561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651968337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412992082 + ... + 412992085.

It is an arithmetic number, because the mean of its divisors is an integer number (619488126).

Almost surely, 2^1651968334 is an apocalyptic number.

1651968334 is a deficient number, since it is larger than the sum of its proper divisors (825984170).

1651968334 is an equidigital number, since it uses as much as digits as its factorization.

1651968334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825984169.

The product of its digits is 466560, while the sum is 46.

The square root of 1651968334 is about 40644.4133184378. The cubic root of 1651968334 is about 1182.1354451346.

The spelling of 1651968334 in words is "one billion, six hundred fifty-one million, nine hundred sixty-eight thousand, three hundred thirty-four".