1690407387054 has 32 divisors (see below), whose sum is σ = 3756549968640. Its totient is φ = 563455762776.

The previous prime is 1690407387047. The next prime is 1690407387077. The reversal of 1690407387054 is 4507837040961.

1690407387054 is a `hidden beast` number, since 1 + 6 + 90 + 407 + 38 + 70 + 54 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2073967 + ... + 2771669.

It is an arithmetic number, because the mean of its divisors is an integer number (117392186520).

Almost surely, 2^{1690407387054} is an apocalyptic number.

1690407387054 is an abundant number, since it is smaller than the sum of its proper divisors (2066142581586).

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

1690407387054 is a wasteful number, since it uses less digits than its factorization.

1690407387054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742581 (or 742575 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 1690407387054 in words is "one trillion, six hundred ninety billion, four hundred seven million, three hundred eighty-seven thousand, fifty-four".