1640214412 has 6 divisors (see below), whose sum is σ = 2870375228. Its totient is φ = 820107204.

The previous prime is 1640214409. The next prime is 1640214427. The reversal of 1640214412 is 2144120461.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205026798 + ... + 205026805.

Almost surely, 2^1640214412 is an apocalyptic number.

It is an amenable number.

1640214412 is a deficient number, since it is larger than the sum of its proper divisors (1230160816).

1640214412 is a wasteful number, since it uses less digits than its factorization.

1640214412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410053607 (or 410053605 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1640214412 is about 40499.5606395921. The cubic root of 1640214412 is about 1179.3250981193.

Adding to 1640214412 its reverse (2144120461), we get a palindrome (3784334873).

The spelling of 1640214412 in words is "one billion, six hundred forty million, two hundred fourteen thousand, four hundred twelve".