1538494701 has 8 divisors (see below), whose sum is σ = 2101358784. Its totient is φ = 1000646880.

The previous prime is 1538494697. The next prime is 1538494729. The reversal of 1538494701 is 1074948351.

It is a happy number.

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

It is not a de Polignac number, because 1538494701 - 2² = 1538494697 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538494301) 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, 6253921 + ... + 6254166.

It is an arithmetic number, because the mean of its divisors is an integer number (262669848).

Almost surely, 2^1538494701 is an apocalyptic number.

It is an amenable number.

1538494701 is a deficient number, since it is larger than the sum of its proper divisors (562864083).

1538494701 is a wasteful number, since it uses less digits than its factorization.

1538494701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12508131.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1538494701 is about 39223.6497664356. The cubic root of 1538494701 is about 1154.4239679315.

The spelling of 1538494701 in words is "one billion, five hundred thirty-eight million, four hundred ninety-four thousand, seven hundred one".