1640530346 has 64 divisors (see below), whose sum is σ = 3130202880. Its totient is φ = 627471360.

The previous prime is 1640530321. The next prime is 1640530351. The reversal of 1640530346 is 6430350461.

It is a super-2 number, since 2×1640530346² = 5382679632293759432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204706 + ... + 1206066.

It is an arithmetic number, because the mean of its divisors is an integer number (48909420).

Almost surely, 2^1640530346 is an apocalyptic number.

1640530346 is a deficient number, since it is larger than the sum of its proper divisors (1489672534).

1640530346 is a wasteful number, since it uses less digits than its factorization.

1640530346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1640530346 is about 40503.4609138528. The cubic root of 1640530346 is about 1179.4008128090.

The spelling of 1640530346 in words is "one billion, six hundred forty million, five hundred thirty thousand, three hundred forty-six".