1641393492 has 12 divisors (see below), whose sum is σ = 3829918176. Its totient is φ = 547131160.

The previous prime is 1641393473. The next prime is 1641393493. The reversal of 1641393492 is 2943931461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641393493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68391384 + ... + 68391407.

It is an arithmetic number, because the mean of its divisors is an integer number (319159848).

Almost surely, 2^1641393492 is an apocalyptic number.

1641393492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641393492 is an abundant number, since it is smaller than the sum of its proper divisors (2188524684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641393492 is a wasteful number, since it uses less digits than its factorization.

1641393492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136782798 (or 136782796 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 1641393492 is about 40514.1147256114. The cubic root of 1641393492 is about 1179.6076192264.

The spelling of 1641393492 in words is "one billion, six hundred forty-one million, three hundred ninety-three thousand, four hundred ninety-two".