1387498941 has 12 divisors (see below), whose sum is σ = 2008188000. Its totient is φ = 923142600.

The previous prime is 1387498933. The next prime is 1387498949. The reversal of 1387498941 is 1498947831.

It is an interprime number because it is at equal distance from previous prime (1387498933) and next prime (1387498949).

It is not a de Polignac number, because 1387498941 - 2³ = 1387498933 is a prime.

It is a super-2 number, since 2×1387498941² = 3850306622552242962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387498949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149985 + ... + 158966.

It is an arithmetic number, because the mean of its divisors is an integer number (167349000).

Almost surely, 2^1387498941 is an apocalyptic number.

It is an amenable number.

1387498941 is a deficient number, since it is larger than the sum of its proper divisors (620689059).

1387498941 is a wasteful number, since it uses less digits than its factorization.

1387498941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309456 (or 309453 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1387498941 is about 37249.1468492904. The cubic root of 1387498941 is about 1115.3492684767.

The spelling of 1387498941 in words is "one billion, three hundred eighty-seven million, four hundred ninety-eight thousand, nine hundred forty-one".