1951268945 has 8 divisors (see below), whose sum is σ = 2381209920. Its totient is φ = 1534557040.

The previous prime is 1951268941. The next prime is 1951268947. The reversal of 1951268945 is 5498621591.

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

It is not a de Polignac number, because 1951268945 - 2² = 1951268941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1951268893 and 1951268902.

It is not an unprimeable number, because it can be changed into a prime (1951268941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306941 + ... + 3307530.

It is an arithmetic number, because the mean of its divisors is an integer number (297651240).

Almost surely, 2^1951268945 is an apocalyptic number.

It is an amenable number.

1951268945 is a deficient number, since it is larger than the sum of its proper divisors (429940975).

1951268945 is an equidigital number, since it uses as much as digits as its factorization.

1951268945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614535.

The product of its digits is 777600, while the sum is 50.

The square root of 1951268945 is about 44173.1699677531. The cubic root of 1951268945 is about 1249.6039161073.

The spelling of 1951268945 in words is "one billion, nine hundred fifty-one million, two hundred sixty-eight thousand, nine hundred forty-five".