1189920412990 has 32 divisors (see below), whose sum is σ = 2265597158976. Its totient is φ = 449037262080.

The previous prime is 1189920412969. The next prime is 1189920413023. The reversal of 1189920412990 is 992140299811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35418601 + ... + 35452180.

It is an arithmetic number, because the mean of its divisors is an integer number (70799911218).

Almost surely, 2^{1189920412990} is an apocalyptic number.

1189920412990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189920412990 is a deficient number, since it is larger than the sum of its proper divisors (1075676745986).

1189920412990 is a wasteful number, since it uses less digits than its factorization.

1189920412990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70870884.

The product of its (nonzero) digits is 839808, while the sum is 55.

The spelling of 1189920412990 in words is "one trillion, one hundred eighty-nine billion, nine hundred twenty million, four hundred twelve thousand, nine hundred ninety".