1640095523 has 32 divisors (see below), whose sum is σ = 1974067200. Its totient is φ = 1345053600.

The previous prime is 1640095463. The next prime is 1640095529. The reversal of 1640095523 is 3255900461.

It is not a de Polignac number, because 1640095523 - 2⁶ = 1640095459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1640095529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1302068 + ... + 1303326.

It is an arithmetic number, because the mean of its divisors is an integer number (61689600).

Almost surely, 2^1640095523 is an apocalyptic number.

1640095523 is a deficient number, since it is larger than the sum of its proper divisors (333971677).

1640095523 is a wasteful number, since it uses less digits than its factorization.

1640095523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1640095523 is about 40498.0928316384. The cubic root of 1640095523 is about 1179.2966034362.

Adding to 1640095523 its reverse (3255900461), we get a palindrome (4895995984).

The spelling of 1640095523 in words is "one billion, six hundred forty million, ninety-five thousand, five hundred twenty-three".