196149780544 has 189 divisors, whose sum is σ = 426546784573. Its totient is φ = 89484634624.

The previous prime is 196149780499. The next prime is 196149780571. The reversal of 196149780544 is 445087941691.

It is a happy number.

The square root of 196149780544 is 442888.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 102856186944 + 93293593600 = 320712^2 + 305440^2 .

It is a super-3 number, since 3×196149780544³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2363250327 + ... + 2363250409.

Almost surely, 2^196149780544 is an apocalyptic number.

196149780544 is the 442888-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196149780544

196149780544 is an abundant number, since it is smaller than the sum of its proper divisors (230397004029).

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

196149780544 is an frugal number, since it uses more digits than its factorization.

196149780544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

It can be divided in two parts, 1961497 and 80544, that added together give a square (2042041 = 1429²).

The spelling of 196149780544 in words is "one hundred ninety-six billion, one hundred forty-nine million, seven hundred eighty thousand, five hundred forty-four".