1651151841 has 4 divisors (see below), whose sum is σ = 2201535792. Its totient is φ = 1100767892.

The previous prime is 1651151833. The next prime is 1651151861. The reversal of 1651151841 is 1481511561.

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.

It is a cyclic number.

It is not a de Polignac number, because 1651151841 - 2³ = 1651151833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1651151861) 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, 275191971 + ... + 275191976.

It is an arithmetic number, because the mean of its divisors is an integer number (550383948).

Almost surely, 2^1651151841 is an apocalyptic number.

It is an amenable number.

1651151841 is a deficient number, since it is larger than the sum of its proper divisors (550383951).

1651151841 is an equidigital number, since it uses as much as digits as its factorization.

1651151841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550383950.

The product of its digits is 4800, while the sum is 33.

The square root of 1651151841 is about 40634.3677322534. The cubic root of 1651151841 is about 1181.9406543995.

The spelling of 1651151841 in words is "one billion, six hundred fifty-one million, one hundred fifty-one thousand, eight hundred forty-one".