1538190296644 has 27 divisors (see below), whose sum is σ = 2698791942301. Its totient is φ = 767112007760.

The previous prime is 1538190296633. The next prime is 1538190296681. The reversal of 1538190296644 is 4466920918351.

The square root of 1538190296644 is 1240238.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 953821783044 + 584368513600 = 976638^2 + 764440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1634633214 + ... + 1634634154.

Almost surely, 2^{1538190296644} is an apocalyptic number.

1538190296644 is the 1240238-th square number.

It is an amenable number.

1538190296644 is a deficient number, since it is larger than the sum of its proper divisors (1160601645657).

1538190296644 is an frugal number, since it uses more digits than its factorization.

1538190296644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 1538190296644 in words is "one trillion, five hundred thirty-eight billion, one hundred ninety million, two hundred ninety-six thousand, six hundred forty-four".