1468171649 has 16 divisors (see below), whose sum is σ = 1699488000. Its totient is φ = 1242354624.

The previous prime is 1468171643. The next prime is 1468171657. The reversal of 1468171649 is 9461718641.

It is a happy number.

It is not a de Polignac number, because 1468171649 - 2⁴ = 1468171633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1468171643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169967 + ... + 178395.

It is an arithmetic number, because the mean of its divisors is an integer number (106218000).

Almost surely, 2^1468171649 is an apocalyptic number.

It is an amenable number.

1468171649 is a deficient number, since it is larger than the sum of its proper divisors (231316351).

1468171649 is a wasteful number, since it uses less digits than its factorization.

1468171649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8752.

The product of its digits is 290304, while the sum is 47.

The square root of 1468171649 is about 38316.7280570771. The cubic root of 1468171649 is about 1136.5597653851.

The spelling of 1468171649 in words is "one billion, four hundred sixty-eight million, one hundred seventy-one thousand, six hundred forty-nine".