1640472526 has 16 divisors (see below), whose sum is σ = 3067896960. Its totient is φ = 639145080.

The previous prime is 1640472481. The next prime is 1640472541. The reversal of 1640472526 is 6252740461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5326056 + ... + 5326363.

It is an arithmetic number, because the mean of its divisors is an integer number (191743560).

Almost surely, 2^1640472526 is an apocalyptic number.

1640472526 is a deficient number, since it is larger than the sum of its proper divisors (1427424434).

1640472526 is a wasteful number, since it uses less digits than its factorization.

1640472526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10652439.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 1640472526 is about 40502.7471413977. The cubic root of 1640472526 is about 1179.3869567702.

The spelling of 1640472526 in words is "one billion, six hundred forty million, four hundred seventy-two thousand, five hundred twenty-six".