16357985490 has 64 divisors (see below), whose sum is σ = 48946498560. Its totient is φ = 3399061440.

The previous prime is 16357985477. The next prime is 16357985491. The reversal of 16357985490 is 9458975361.

It is a self number, because there is not a number n which added to its sum of digits gives 16357985490.

It is not an unprimeable number, because it can be changed into a prime (16357985491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3538380 + ... + 3542999.

It is an arithmetic number, because the mean of its divisors is an integer number (764789040).

Almost surely, 2^16357985490 is an apocalyptic number.

16357985490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16357985490 is an abundant number, since it is smaller than the sum of its proper divisors (32588513070).

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

16357985490 is a wasteful number, since it uses less digits than its factorization.

16357985490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081407.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 16357985490 in words is "sixteen billion, three hundred fifty-seven million, nine hundred eighty-five thousand, four hundred ninety".