1890007135949 has 8 divisors (see below), whose sum is σ = 1891646168640. Its totient is φ = 1888368725376.

The previous prime is 1890007135931. The next prime is 1890007135963. The reversal of 1890007135949 is 9495317000981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1890007135949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1890007135894 and 1890007135903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890007135909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6029312 + ... + 6335030.

It is an arithmetic number, because the mean of its divisors is an integer number (236455771080).

Almost surely, 2^{1890007135949} is an apocalyptic number.

It is an amenable number.

1890007135949 is a deficient number, since it is larger than the sum of its proper divisors (1639032691).

1890007135949 is a wasteful number, since it uses less digits than its factorization.

1890007135949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311059.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 1890007135949 in words is "one trillion, eight hundred ninety billion, seven million, one hundred thirty-five thousand, nine hundred forty-nine".