1906512557820 has 192 divisors, whose sum is σ = 6002082422784. Its totient is φ = 448647091200.

The previous prime is 1906512557791. The next prime is 1906512557827. The reversal of 1906512557820 is 287552156091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906512557827) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34075989 + ... + 34131891.

It is an arithmetic number, because the mean of its divisors is an integer number (31260845952).

Almost surely, 2^{1906512557820} is an apocalyptic number.

1906512557820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906512557820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3001041211392).

1906512557820 is an abundant number, since it is smaller than the sum of its proper divisors (4095569864964).

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

1906512557820 is a wasteful number, since it uses less digits than its factorization.

1906512557820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57852 (or 57850 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 1906512557820 in words is "one trillion, nine hundred six billion, five hundred twelve million, five hundred fifty-seven thousand, eight hundred twenty".