1189949350100 has 72 divisors (see below), whose sum is σ = 3019704101568. Its totient is φ = 398494656000.

The previous prime is 1189949350099. The next prime is 1189949350103. The reversal of 1189949350100 is 10539499811.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189949350103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19736501 + ... + 19796700.

It is an arithmetic number, because the mean of its divisors is an integer number (41940334744).

Almost surely, 2^{1189949350100} is an apocalyptic number.

1189949350100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189949350100 is an abundant number, since it is smaller than the sum of its proper divisors (1829754751468).

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

1189949350100 is a wasteful number, since it uses less digits than its factorization.

1189949350100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39533265 (or 39533258 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 50.

The spelling of 1189949350100 in words is "one trillion, one hundred eighty-nine billion, nine hundred forty-nine million, three hundred fifty thousand, one hundred".